#wetbulb — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #wetbulb, aggregated by home.social.
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@ai6yr There is high danger of a mass #casualty “wet-bulb event” in Turkey and elsewhere that hit 50 C high temperatures! The chart in the attached picture show the relationship between temperature and relative humidity. Short story: very high temperatures and even moderate humidity will kill you because you can’t cool your body core by perspiration. That’s the red area in the chart. Human physiology varies; that’s why there is a wide yellow line. How long you can survive is also a variable. With the #ClimateCrisis , it is question of when — not if — a #wetbulb catastrophe will occur. Anyone caught without A/C in one of those areas will die if it lasts very long. Is this what will stir people into action? A fictional, but scientifically accurate, depiction of a wet-bulb event is the first chapter in “Ministry of the Future” by Kim Stanley Robinson.
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Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.
"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.
"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]
"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.
These variables include:
- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"Read more:
https://www.dtn.com/forget-heat-index-wet-bulb-globe-temperature-is-where-its-at/#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves
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Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.
"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.
"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]
"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.
These variables include:
- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"Read more:
https://www.dtn.com/forget-heat-index-wet-bulb-globe-temperature-is-where-its-at/#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves
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Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.
"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.
"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]
"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.
These variables include:
- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"Read more:
https://www.dtn.com/forget-heat-index-wet-bulb-globe-temperature-is-where-its-at/#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves
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Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.
"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.
"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]
"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.
These variables include:
- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"Read more:
https://www.dtn.com/forget-heat-index-wet-bulb-globe-temperature-is-where-its-at/#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves
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Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.
"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.
"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]
"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.
These variables include:
- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"Read more:
https://www.dtn.com/forget-heat-index-wet-bulb-globe-temperature-is-where-its-at/#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves
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#WetBulb Calculator
This wet bulb calculator is designed to help you estimate the wet bulb temperature based on only two pieces of data - the temperature 🌡️ and the relative humidity
https://www.omnicalculator.com/physics/wet-bulb#google_vignette
#ExtremeHeat #ExtremeHumidity
#WetBulbTemperatures #ClimateChange #GlobalWarming -
#HeatIndex versus #WetBulb temperatures
The world needs a new way to talk about heat
by Michael J. Coren
July 25, 2023"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."
Archived version:
https://archive.ph/rwMSE#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming
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#HeatIndex versus #WetBulb temperatures
The world needs a new way to talk about heat
by Michael J. Coren
July 25, 2023"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."
Archived version:
https://archive.ph/rwMSE#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming
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#HeatIndex versus #WetBulb temperatures
The world needs a new way to talk about heat
by Michael J. Coren
July 25, 2023"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."
Archived version:
https://archive.ph/rwMSE#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming
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#HeatIndex versus #WetBulb temperatures
The world needs a new way to talk about heat
by Michael J. Coren
July 25, 2023"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."
Archived version:
https://archive.ph/rwMSE#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming
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#HeatIndex versus #WetBulb temperatures
The world needs a new way to talk about heat
by Michael J. Coren
July 25, 2023"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."
Archived version:
https://archive.ph/rwMSE#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming
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#USWeather: Over 2,800 #HighTemperature records set during #HeatWave
A week-long heat wave set over 2,800 record high temperatures in towns across the nation, with some spots measuring their hottest June or all-time temperatures.
By Jesse Ferrell & Brian Lada
Published Jun 23, 2025"A total of 955 daily high temperature records and 1,899 daily high minimum (warm night) records were tied or broken during the last week's heat wave.
"Records dating back to the 1800s were shattered as an early-summer heat wave roasted large areas of the central and eastern United States. AccuWeather RealFeel® Temperatures blew past the 100-degree mark, air conditioners were on full blast, and cities opened cooling centers to help people cope with the intense heat.
" 'This is an incredibly hot and steamy heat wave for the month of June,' AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Tuesday's heat breaks 137-year-old record
"The heat wave peaked on Tuesday, and it wasn't just the hottest day of 2025, but the hottest weather many residents in the Northeast have experienced in over a decade.
"The mercury soared to 102 degrees in Boston on Tuesday afternoon, making it the hottest day in the city since July 22, 2011, when it reached 103. Philadelphia also notched its first 100-degree day since July 18, 2012.
"In New York City, the temperature fell just shy of hitting triple digits, but the high of 99 degrees was still enough to beat the previous daily record for the date, surpassing the high of 96 degrees set on June 24, 1888. Some areas not far from Central Park, where the official weather observations for the city are taken, did manage to hit 100 degrees, including Newark (103) and John F. Kennedy International Airport (102).
"Other cities across the region that reached 100 F on Tuesday afternoon include Hartford, Connecticut; Providence, Rhode Island; Wilmington and Dover, Delaware; and Manchester, New Hampshire.
"Monthly and hourly records were also set
"Illustrating how unusual and early the heat wave was, a thermometer in #AugustaME, recorded 100 degrees, tying their all-time record high set on Aug. 5, 1955. It joined 13 other stations where the temperature had never been recorded hotter.
"Many cities had never been as hot in June as they were Tuesday. Stations reporting their hottest June temperatures on record include #NewarkNJ, at 103 (tied); #NewYorkCity (Kennedy & LaGuardia at 102 and 101, a tie); Islip, New York at 101; Portland and #BangorME, at 99 and 98, a tie; and Mount Pocono, Pennsylvania, at 93, recorded on Monday. A total of 90 stations set June records.
"The heat came early in the day, with #Philadelphia setting or tying new hourly record highs for 9 a.m., 7 a.m., and 5 a.m., and New York City (JFK Airport) notching new or tied extreme highs at 3 a.m., 8 a.m., 1 p.m., 4 p.m., and 5 p.m, according to the Iowa Environmental Mesonet. For June, Philadelphia's hourly temperatures had never been higher for all but two hours of the day.
Monday's records
"The first full week of astronomical summer wasted no time warming up, with many thermometers across the region reaching levels they haven't hit in years.
"#Baltimore's Inner Harbor was one of the hottest spots on Monday, with a high of 104 F. The high humidity and strong summer sun made it dangerously hot outside, with the AccuWeather RealFeel® Temperature topping out at 113 degrees. To put this heat into perspective, 113 degrees is the historical average high temperature in Death Valley in mid-June.
"#NewarkNJ, reached 101 degrees, breaking its daily record of 99, and #RaleighNC, tied its daily record of 100, set last year.
"Although other weather stations broke records, they were all below 100 degrees. Most notably, the temperature at Mount Pocono, Pennsylvania, rose to 93 degrees, breaking the daily record and setting June's highest reading. This was the first 90-degree day at Mount Pocono since 2013.
Sunday's records"On Sunday, three weather stations broke the high temperature records for the date. Alpena, Michigan, hit 97 degrees Fahrenheit, breaking the previous record of 93 set in 1975. In #ValleyNE, the mercury pushed up to 94 degrees, breaking the old record of 91 from 2023. And in #MarquetteMI, the old record of 90 degrees, on this date in 1995, was smashed by a reading of 93.
"But it wasn't just daily record highs. Records for warm nights were also broken at breakneck speed. Saturday night tied the all-time high minimum historical record for Green Bay, Wisconsin, at 79 degrees, previously achieved in July 4, 1897, and July 30, 1916. Wausau, Wisconsin, didn't cool below 78 degrees, which had previously happened only on July 4, 1999. The fact that these records were previously recorded in July is an indicator of how early this severe heat wave is.
"Record warm nights for June were also set at La Crosse, Wisconsin, (80 degrees) and Mason City, Iowa, (77 degrees) Saturday night.
"A total of 255 record warm nights for June were recorded over the last week, with 59 of those new records the warmest nights ever recorded at the stations."
#ClimateDiary #ClimateDiaryUS #ClimateDiaryMaine #RecordBreakingHeat #ExtremeHeat #Humidity #ExtremeTemperatures #Wetbulb #GlobalWarming #GlobalBoiling
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#USWeather: Over 2,800 #HighTemperature records set during #HeatWave
A week-long heat wave set over 2,800 record high temperatures in towns across the nation, with some spots measuring their hottest June or all-time temperatures.
By Jesse Ferrell & Brian Lada
Published Jun 23, 2025"A total of 955 daily high temperature records and 1,899 daily high minimum (warm night) records were tied or broken during the last week's heat wave.
"Records dating back to the 1800s were shattered as an early-summer heat wave roasted large areas of the central and eastern United States. AccuWeather RealFeel® Temperatures blew past the 100-degree mark, air conditioners were on full blast, and cities opened cooling centers to help people cope with the intense heat.
" 'This is an incredibly hot and steamy heat wave for the month of June,' AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Tuesday's heat breaks 137-year-old record
"The heat wave peaked on Tuesday, and it wasn't just the hottest day of 2025, but the hottest weather many residents in the Northeast have experienced in over a decade.
"The mercury soared to 102 degrees in Boston on Tuesday afternoon, making it the hottest day in the city since July 22, 2011, when it reached 103. Philadelphia also notched its first 100-degree day since July 18, 2012.
"In New York City, the temperature fell just shy of hitting triple digits, but the high of 99 degrees was still enough to beat the previous daily record for the date, surpassing the high of 96 degrees set on June 24, 1888. Some areas not far from Central Park, where the official weather observations for the city are taken, did manage to hit 100 degrees, including Newark (103) and John F. Kennedy International Airport (102).
"Other cities across the region that reached 100 F on Tuesday afternoon include Hartford, Connecticut; Providence, Rhode Island; Wilmington and Dover, Delaware; and Manchester, New Hampshire.
"Monthly and hourly records were also set
"Illustrating how unusual and early the heat wave was, a thermometer in #AugustaME, recorded 100 degrees, tying their all-time record high set on Aug. 5, 1955. It joined 13 other stations where the temperature had never been recorded hotter.
"Many cities had never been as hot in June as they were Tuesday. Stations reporting their hottest June temperatures on record include #NewarkNJ, at 103 (tied); #NewYorkCity (Kennedy & LaGuardia at 102 and 101, a tie); Islip, New York at 101; Portland and #BangorME, at 99 and 98, a tie; and Mount Pocono, Pennsylvania, at 93, recorded on Monday. A total of 90 stations set June records.
"The heat came early in the day, with #Philadelphia setting or tying new hourly record highs for 9 a.m., 7 a.m., and 5 a.m., and New York City (JFK Airport) notching new or tied extreme highs at 3 a.m., 8 a.m., 1 p.m., 4 p.m., and 5 p.m, according to the Iowa Environmental Mesonet. For June, Philadelphia's hourly temperatures had never been higher for all but two hours of the day.
Monday's records
"The first full week of astronomical summer wasted no time warming up, with many thermometers across the region reaching levels they haven't hit in years.
"#Baltimore's Inner Harbor was one of the hottest spots on Monday, with a high of 104 F. The high humidity and strong summer sun made it dangerously hot outside, with the AccuWeather RealFeel® Temperature topping out at 113 degrees. To put this heat into perspective, 113 degrees is the historical average high temperature in Death Valley in mid-June.
"#NewarkNJ, reached 101 degrees, breaking its daily record of 99, and #RaleighNC, tied its daily record of 100, set last year.
"Although other weather stations broke records, they were all below 100 degrees. Most notably, the temperature at Mount Pocono, Pennsylvania, rose to 93 degrees, breaking the daily record and setting June's highest reading. This was the first 90-degree day at Mount Pocono since 2013.
Sunday's records"On Sunday, three weather stations broke the high temperature records for the date. Alpena, Michigan, hit 97 degrees Fahrenheit, breaking the previous record of 93 set in 1975. In #ValleyNE, the mercury pushed up to 94 degrees, breaking the old record of 91 from 2023. And in #MarquetteMI, the old record of 90 degrees, on this date in 1995, was smashed by a reading of 93.
"But it wasn't just daily record highs. Records for warm nights were also broken at breakneck speed. Saturday night tied the all-time high minimum historical record for Green Bay, Wisconsin, at 79 degrees, previously achieved in July 4, 1897, and July 30, 1916. Wausau, Wisconsin, didn't cool below 78 degrees, which had previously happened only on July 4, 1999. The fact that these records were previously recorded in July is an indicator of how early this severe heat wave is.
"Record warm nights for June were also set at La Crosse, Wisconsin, (80 degrees) and Mason City, Iowa, (77 degrees) Saturday night.
"A total of 255 record warm nights for June were recorded over the last week, with 59 of those new records the warmest nights ever recorded at the stations."
#ClimateDiary #ClimateDiaryUS #ClimateDiaryMaine #RecordBreakingHeat #ExtremeHeat #Humidity #ExtremeTemperatures #Wetbulb #GlobalWarming #GlobalBoiling
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#USWeather: Over 2,800 #HighTemperature records set during #HeatWave
A week-long heat wave set over 2,800 record high temperatures in towns across the nation, with some spots measuring their hottest June or all-time temperatures.
By Jesse Ferrell & Brian Lada
Published Jun 23, 2025"A total of 955 daily high temperature records and 1,899 daily high minimum (warm night) records were tied or broken during the last week's heat wave.
"Records dating back to the 1800s were shattered as an early-summer heat wave roasted large areas of the central and eastern United States. AccuWeather RealFeel® Temperatures blew past the 100-degree mark, air conditioners were on full blast, and cities opened cooling centers to help people cope with the intense heat.
" 'This is an incredibly hot and steamy heat wave for the month of June,' AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Tuesday's heat breaks 137-year-old record
"The heat wave peaked on Tuesday, and it wasn't just the hottest day of 2025, but the hottest weather many residents in the Northeast have experienced in over a decade.
"The mercury soared to 102 degrees in Boston on Tuesday afternoon, making it the hottest day in the city since July 22, 2011, when it reached 103. Philadelphia also notched its first 100-degree day since July 18, 2012.
"In New York City, the temperature fell just shy of hitting triple digits, but the high of 99 degrees was still enough to beat the previous daily record for the date, surpassing the high of 96 degrees set on June 24, 1888. Some areas not far from Central Park, where the official weather observations for the city are taken, did manage to hit 100 degrees, including Newark (103) and John F. Kennedy International Airport (102).
"Other cities across the region that reached 100 F on Tuesday afternoon include Hartford, Connecticut; Providence, Rhode Island; Wilmington and Dover, Delaware; and Manchester, New Hampshire.
"Monthly and hourly records were also set
"Illustrating how unusual and early the heat wave was, a thermometer in #AugustaME, recorded 100 degrees, tying their all-time record high set on Aug. 5, 1955. It joined 13 other stations where the temperature had never been recorded hotter.
"Many cities had never been as hot in June as they were Tuesday. Stations reporting their hottest June temperatures on record include #NewarkNJ, at 103 (tied); #NewYorkCity (Kennedy & LaGuardia at 102 and 101, a tie); Islip, New York at 101; Portland and #BangorME, at 99 and 98, a tie; and Mount Pocono, Pennsylvania, at 93, recorded on Monday. A total of 90 stations set June records.
"The heat came early in the day, with #Philadelphia setting or tying new hourly record highs for 9 a.m., 7 a.m., and 5 a.m., and New York City (JFK Airport) notching new or tied extreme highs at 3 a.m., 8 a.m., 1 p.m., 4 p.m., and 5 p.m, according to the Iowa Environmental Mesonet. For June, Philadelphia's hourly temperatures had never been higher for all but two hours of the day.
Monday's records
"The first full week of astronomical summer wasted no time warming up, with many thermometers across the region reaching levels they haven't hit in years.
"#Baltimore's Inner Harbor was one of the hottest spots on Monday, with a high of 104 F. The high humidity and strong summer sun made it dangerously hot outside, with the AccuWeather RealFeel® Temperature topping out at 113 degrees. To put this heat into perspective, 113 degrees is the historical average high temperature in Death Valley in mid-June.
"#NewarkNJ, reached 101 degrees, breaking its daily record of 99, and #RaleighNC, tied its daily record of 100, set last year.
"Although other weather stations broke records, they were all below 100 degrees. Most notably, the temperature at Mount Pocono, Pennsylvania, rose to 93 degrees, breaking the daily record and setting June's highest reading. This was the first 90-degree day at Mount Pocono since 2013.
Sunday's records"On Sunday, three weather stations broke the high temperature records for the date. Alpena, Michigan, hit 97 degrees Fahrenheit, breaking the previous record of 93 set in 1975. In #ValleyNE, the mercury pushed up to 94 degrees, breaking the old record of 91 from 2023. And in #MarquetteMI, the old record of 90 degrees, on this date in 1995, was smashed by a reading of 93.
"But it wasn't just daily record highs. Records for warm nights were also broken at breakneck speed. Saturday night tied the all-time high minimum historical record for Green Bay, Wisconsin, at 79 degrees, previously achieved in July 4, 1897, and July 30, 1916. Wausau, Wisconsin, didn't cool below 78 degrees, which had previously happened only on July 4, 1999. The fact that these records were previously recorded in July is an indicator of how early this severe heat wave is.
"Record warm nights for June were also set at La Crosse, Wisconsin, (80 degrees) and Mason City, Iowa, (77 degrees) Saturday night.
"A total of 255 record warm nights for June were recorded over the last week, with 59 of those new records the warmest nights ever recorded at the stations."
#ClimateDiary #ClimateDiaryUS #ClimateDiaryMaine #RecordBreakingHeat #ExtremeHeat #Humidity #ExtremeTemperatures #Wetbulb #GlobalWarming #GlobalBoiling
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#USWeather: Over 2,800 #HighTemperature records set during #HeatWave
A week-long heat wave set over 2,800 record high temperatures in towns across the nation, with some spots measuring their hottest June or all-time temperatures.
By Jesse Ferrell & Brian Lada
Published Jun 23, 2025"A total of 955 daily high temperature records and 1,899 daily high minimum (warm night) records were tied or broken during the last week's heat wave.
"Records dating back to the 1800s were shattered as an early-summer heat wave roasted large areas of the central and eastern United States. AccuWeather RealFeel® Temperatures blew past the 100-degree mark, air conditioners were on full blast, and cities opened cooling centers to help people cope with the intense heat.
" 'This is an incredibly hot and steamy heat wave for the month of June,' AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Tuesday's heat breaks 137-year-old record
"The heat wave peaked on Tuesday, and it wasn't just the hottest day of 2025, but the hottest weather many residents in the Northeast have experienced in over a decade.
"The mercury soared to 102 degrees in Boston on Tuesday afternoon, making it the hottest day in the city since July 22, 2011, when it reached 103. Philadelphia also notched its first 100-degree day since July 18, 2012.
"In New York City, the temperature fell just shy of hitting triple digits, but the high of 99 degrees was still enough to beat the previous daily record for the date, surpassing the high of 96 degrees set on June 24, 1888. Some areas not far from Central Park, where the official weather observations for the city are taken, did manage to hit 100 degrees, including Newark (103) and John F. Kennedy International Airport (102).
"Other cities across the region that reached 100 F on Tuesday afternoon include Hartford, Connecticut; Providence, Rhode Island; Wilmington and Dover, Delaware; and Manchester, New Hampshire.
"Monthly and hourly records were also set
"Illustrating how unusual and early the heat wave was, a thermometer in #AugustaME, recorded 100 degrees, tying their all-time record high set on Aug. 5, 1955. It joined 13 other stations where the temperature had never been recorded hotter.
"Many cities had never been as hot in June as they were Tuesday. Stations reporting their hottest June temperatures on record include #NewarkNJ, at 103 (tied); #NewYorkCity (Kennedy & LaGuardia at 102 and 101, a tie); Islip, New York at 101; Portland and #BangorME, at 99 and 98, a tie; and Mount Pocono, Pennsylvania, at 93, recorded on Monday. A total of 90 stations set June records.
"The heat came early in the day, with #Philadelphia setting or tying new hourly record highs for 9 a.m., 7 a.m., and 5 a.m., and New York City (JFK Airport) notching new or tied extreme highs at 3 a.m., 8 a.m., 1 p.m., 4 p.m., and 5 p.m, according to the Iowa Environmental Mesonet. For June, Philadelphia's hourly temperatures had never been higher for all but two hours of the day.
Monday's records
"The first full week of astronomical summer wasted no time warming up, with many thermometers across the region reaching levels they haven't hit in years.
"#Baltimore's Inner Harbor was one of the hottest spots on Monday, with a high of 104 F. The high humidity and strong summer sun made it dangerously hot outside, with the AccuWeather RealFeel® Temperature topping out at 113 degrees. To put this heat into perspective, 113 degrees is the historical average high temperature in Death Valley in mid-June.
"#NewarkNJ, reached 101 degrees, breaking its daily record of 99, and #RaleighNC, tied its daily record of 100, set last year.
"Although other weather stations broke records, they were all below 100 degrees. Most notably, the temperature at Mount Pocono, Pennsylvania, rose to 93 degrees, breaking the daily record and setting June's highest reading. This was the first 90-degree day at Mount Pocono since 2013.
Sunday's records"On Sunday, three weather stations broke the high temperature records for the date. Alpena, Michigan, hit 97 degrees Fahrenheit, breaking the previous record of 93 set in 1975. In #ValleyNE, the mercury pushed up to 94 degrees, breaking the old record of 91 from 2023. And in #MarquetteMI, the old record of 90 degrees, on this date in 1995, was smashed by a reading of 93.
"But it wasn't just daily record highs. Records for warm nights were also broken at breakneck speed. Saturday night tied the all-time high minimum historical record for Green Bay, Wisconsin, at 79 degrees, previously achieved in July 4, 1897, and July 30, 1916. Wausau, Wisconsin, didn't cool below 78 degrees, which had previously happened only on July 4, 1999. The fact that these records were previously recorded in July is an indicator of how early this severe heat wave is.
"Record warm nights for June were also set at La Crosse, Wisconsin, (80 degrees) and Mason City, Iowa, (77 degrees) Saturday night.
"A total of 255 record warm nights for June were recorded over the last week, with 59 of those new records the warmest nights ever recorded at the stations."
#ClimateDiary #ClimateDiaryUS #ClimateDiaryMaine #RecordBreakingHeat #ExtremeHeat #Humidity #ExtremeTemperatures #Wetbulb #GlobalWarming #GlobalBoiling
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#USWeather: Over 2,800 #HighTemperature records set during #HeatWave
A week-long heat wave set over 2,800 record high temperatures in towns across the nation, with some spots measuring their hottest June or all-time temperatures.
By Jesse Ferrell & Brian Lada
Published Jun 23, 2025"A total of 955 daily high temperature records and 1,899 daily high minimum (warm night) records were tied or broken during the last week's heat wave.
"Records dating back to the 1800s were shattered as an early-summer heat wave roasted large areas of the central and eastern United States. AccuWeather RealFeel® Temperatures blew past the 100-degree mark, air conditioners were on full blast, and cities opened cooling centers to help people cope with the intense heat.
" 'This is an incredibly hot and steamy heat wave for the month of June,' AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Tuesday's heat breaks 137-year-old record
"The heat wave peaked on Tuesday, and it wasn't just the hottest day of 2025, but the hottest weather many residents in the Northeast have experienced in over a decade.
"The mercury soared to 102 degrees in Boston on Tuesday afternoon, making it the hottest day in the city since July 22, 2011, when it reached 103. Philadelphia also notched its first 100-degree day since July 18, 2012.
"In New York City, the temperature fell just shy of hitting triple digits, but the high of 99 degrees was still enough to beat the previous daily record for the date, surpassing the high of 96 degrees set on June 24, 1888. Some areas not far from Central Park, where the official weather observations for the city are taken, did manage to hit 100 degrees, including Newark (103) and John F. Kennedy International Airport (102).
"Other cities across the region that reached 100 F on Tuesday afternoon include Hartford, Connecticut; Providence, Rhode Island; Wilmington and Dover, Delaware; and Manchester, New Hampshire.
"Monthly and hourly records were also set
"Illustrating how unusual and early the heat wave was, a thermometer in #AugustaME, recorded 100 degrees, tying their all-time record high set on Aug. 5, 1955. It joined 13 other stations where the temperature had never been recorded hotter.
"Many cities had never been as hot in June as they were Tuesday. Stations reporting their hottest June temperatures on record include #NewarkNJ, at 103 (tied); #NewYorkCity (Kennedy & LaGuardia at 102 and 101, a tie); Islip, New York at 101; Portland and #BangorME, at 99 and 98, a tie; and Mount Pocono, Pennsylvania, at 93, recorded on Monday. A total of 90 stations set June records.
"The heat came early in the day, with #Philadelphia setting or tying new hourly record highs for 9 a.m., 7 a.m., and 5 a.m., and New York City (JFK Airport) notching new or tied extreme highs at 3 a.m., 8 a.m., 1 p.m., 4 p.m., and 5 p.m, according to the Iowa Environmental Mesonet. For June, Philadelphia's hourly temperatures had never been higher for all but two hours of the day.
Monday's records
"The first full week of astronomical summer wasted no time warming up, with many thermometers across the region reaching levels they haven't hit in years.
"#Baltimore's Inner Harbor was one of the hottest spots on Monday, with a high of 104 F. The high humidity and strong summer sun made it dangerously hot outside, with the AccuWeather RealFeel® Temperature topping out at 113 degrees. To put this heat into perspective, 113 degrees is the historical average high temperature in Death Valley in mid-June.
"#NewarkNJ, reached 101 degrees, breaking its daily record of 99, and #RaleighNC, tied its daily record of 100, set last year.
"Although other weather stations broke records, they were all below 100 degrees. Most notably, the temperature at Mount Pocono, Pennsylvania, rose to 93 degrees, breaking the daily record and setting June's highest reading. This was the first 90-degree day at Mount Pocono since 2013.
Sunday's records"On Sunday, three weather stations broke the high temperature records for the date. Alpena, Michigan, hit 97 degrees Fahrenheit, breaking the previous record of 93 set in 1975. In #ValleyNE, the mercury pushed up to 94 degrees, breaking the old record of 91 from 2023. And in #MarquetteMI, the old record of 90 degrees, on this date in 1995, was smashed by a reading of 93.
"But it wasn't just daily record highs. Records for warm nights were also broken at breakneck speed. Saturday night tied the all-time high minimum historical record for Green Bay, Wisconsin, at 79 degrees, previously achieved in July 4, 1897, and July 30, 1916. Wausau, Wisconsin, didn't cool below 78 degrees, which had previously happened only on July 4, 1999. The fact that these records were previously recorded in July is an indicator of how early this severe heat wave is.
"Record warm nights for June were also set at La Crosse, Wisconsin, (80 degrees) and Mason City, Iowa, (77 degrees) Saturday night.
"A total of 255 record warm nights for June were recorded over the last week, with 59 of those new records the warmest nights ever recorded at the stations."
#ClimateDiary #ClimateDiaryUS #ClimateDiaryMaine #RecordBreakingHeat #ExtremeHeat #Humidity #ExtremeTemperatures #Wetbulb #GlobalWarming #GlobalBoiling
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Yup. 100°F (37.7°C) on Tuesday, 60°F (15.5°C) on Thursday. Just another week under the #ClimateChangeWeatherWheel! Spin the wheel and see where it lands! #Wetbulb? #BlisteringSun? Dusty/Hazy? Habitable Zone? Who knows!!!
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@ArtseaGardener Yikes! We definitely were in the danger zone today in Southern Maine!
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A lot of #WetBulb resources have disappeared... I found this one, but if anyone knows of others, please let me know!
https://www.weather.gov/tsa/wbgt
#Heatwave #Heatwaves #ClimateChange #Wetbulb #GlobalHeating
#ExtremeTemperatures
#GlobalWeather #USWeather #ExtremeWeather #WeatherWebsites
#WeatherResources -
A favorite of mine, Windy.com -- which has had significant upgrades!
"In 2021, two new #ICON forecast models were integrated - ICON-D2 with local coverage for central and west #Europe and ICON Global. Thousands of new air quality stations monitoring primary pollutants worldwide were added from our partners #OpenAQ and #PurpleAir to fight #AirInequality.
"Several new layers were launched - Tidal currents featuring high-resolution data; the Sea currents dataset was updated; Thermals layer with soaring forecast for glider and paraglider pilots; Drought monitoring layers - Soil moisture, Moisture anomaly, and #Drought intensity, monitoring global drought.
"We also expanded into the wear OS category and introduced Windy Apple Watch App. The 3D Globe mode was brought back for most layers (desktop only), including the Hurricane Tracker.
"In 2022, we launched several new features and improved existing ones. In the beginning of the year, we added a new #radioactivity set of stations as a POI overlay and partnered with SaveEcoBot, run by a non-profit organisation SaveDnipro, and obtained a broad spectrum of environmental data sources in #Ukraine and offer them in an easy-to-access way to our users and other affected communities for free.
New local models HRRR for the US and ACCESS model for Australia were added, along with a set of layers wet-bulb temperature, UV Index and Solar power.
With release of iOS16, the Windy.com iOS app got LockScreen widgets, which can be placed on the phones's locked screen. A new significant iOS feature."For the #HurricaneSeason, we launched redesigned and upgraded our Hurricane Tracker and added multimodel forecast & LIVE satellite visualization. Users in the US could also appreciate an improved radar resolution and coverage."
#Heatwave #Heatwaves #ClimateChange #Wetbulb #GlobalHeating #ExtremeTemperatures #GlobalWeather #USWeather #ExtremeWeather #AirQuality #AQI #WeatherWebsites #WeatherResources #ClimateChangeWeatherWheel
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#WorldWeatherMap - "Interactive world weather map by Worldweatheronline.com with temperature, precipitation, cloudiness, wind. Animated hourly and daily weather forecasts on map"
https://map.worldweatheronline.com/
#Heatwave #Heatwaves #ClimateChange #Wetbulb #GlobalHeating
#ExtremeTemperatures #GlobalWeather #USWeather #ExtremeWeather #WeatherWebsites #WeatherResources #ClimateChangeWeatherWheel -
#ZoomEarth is an interactive weather map of the world. "With Zoom Earth you can track the development of hurricanes and storms, monitor wildfires and smoke, stay aware of the latest conditions by viewing satellite imagery and rain radar updated in near real-time."
https://zoom.earth/maps/satellite/
#Heatwave #Heatwaves #ClimateChange #Wetbulb #GlobalHeating
#ExtremeTemperatures #GlobalWeather #USWeather #ExtremeWeather #WeatherWebsites #WeatherResources #ClimateChangeWeatherWheel -
[Thread] Time to update the #Weather websites list! Mostly #USWx, but some worldwide websites as well. Suggestions welcome!
#Heatwave #Heatwaves #ClimateChange #Weather #Wetbulb #GlobalHeating #ExtremeTemperatures #GlobalWeather #USWeather #ExtremeWeather #WeatherWebsites #WeatherResources
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#WetBulb for #WashingtonDC on June 24, 2025 at 2:00pm EDT.
Forecast Maximum Temperature (F): 102°F (38.89°C)
DewPoint (F): 71°F
Relative Humidity (%): 37%
Wind Speed (mph): 5mph
Cloud Clover (%): 20%
Heat Index (F): 111°F (43.89°C)
Wet Bulb Temperature (F): 90°FSource:
weather.gov/tsa/wbgt#Heatwave #ExtremeHeat #ExtremeHumidity #ClimateChange #WetBulbTemp
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#WetBulb Globe Temperature (Prototype-Under Development. Not to be used for operational use)
"The WetBulb Globe Temperature (WBGT) is a measure of the heat stress in direct sunlight, which takes into account: temperature, humidity, wind speed, sun angle and cloud cover (solar radiation). This differs from the heat index, which takes into consideration temperature and humidity and is calculated for shady areas. If you work or exercise in direct sunlight, this is a good element to monitor. Military agencies, OSHA and many nations use the WBGT as a guide to managing workload in direct sunlight."
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Last year at this time. Curious to see if #MountWashingtonObservatory breaks more heat records next week...
From 2024: The First #SevereHeat of the Year Sweeps Across the #Midwest and #Northeast
By Alexis George
Updated June 22, 2024"New Englanders dragged fans and air conditioners out of their closets earlier this week as the first heat wave of the year gripped the Northeast. The hot and humid weather that arrived on Tuesday, June 18th, prompted officials to declare heat alerts as temperatures skyrocketed into the 90s across many locations. And the humidity only made it feel hotter, which caused the heat index to soar over 100 degrees in parts of the Northeast on Tuesday afternoon.
"We saw little relief from the hot temperatures on Wednesday as the heat wave continued. Temperatures across New England soared into the mid and upper 90s, with parts of the region posting higher temperatures than South Florida on Wednesday. #BostonMA set a record-high temperature of 98 degrees on Wednesday, which broke the previous record of 96 degrees. A new daily record high of 70 degrees was recorded at #MountWashingtonObservatory on Wednesday, which broke the previous record of 67 degrees that was originally recorded in 1995. The new record high temperature recorded at #MountWashington on Wednesday also fell a few degrees short of the highest temperature ever recorded in June and the all-time station high of 72 degrees. Here are some other records that were set on Wednesday:
- Millinocket, Maine, hit 97 degrees, a calendar-day record.
- Caribou, Maine, hit 96 degrees, matching its all-time high temperature. It also posted a heat index of 103, the highest on record.
- Bangor and Houlton in Maine tied calendar-day records of 95 degrees.
- Reading, Pennsylvania, tied a calendar-day record of 95 degrees.
- Syracuse, New York, tied a calendar-day record of 95 degrees.
- Poughkeepsie, New York, hit 94 degrees, a calendar-day record.
- Cleveland tied a calendar-day record of 92 degrees.
- Buffalo tied a calendar-day record of 90 degrees.
- Elkins, West Virginia, hit 90 degrees, a calendar-day record.
- DuBois, Pennsylvania, hit 80 degrees, a calendar-day record."The heat would not relent on Thursday, June 20th, as heat advisories and excessive heat watches remained in effect for parts of the Northeast. Temperatures were forecast to reach a scorching 99 degrees in #ConcordNH, and 95 degrees in Boston on Thursday. The excessive heat also caused some trains in the Northeast to operate at lower speeds on Thursday, as rail temperatures exceeded 135 degrees!
"Another daily record high temperature was recorded atop Mount Washington on June 20th, with the new daily record of 65 degrees breaking the previous record of 64 degrees, which was set in 2016 and equaled in 2020."
[...]
"The stubborn heat wave finally died down some by Friday, June 21st, as cooler air arrived behind the passing cold front. While this historic heat wave definitely made headlines in the Midwest and Northeast, on the flip side, a colder weather pattern dumped up to a foot of snow at some higher elevations in Montana and Idaho earlier this week, just days away from the summer solstice!"
#ExtremeWeather #ExtremeHeat #Heatwaves #ClimateChange #Weather2024 #heatwave 🥵 #SummerSolstice ☀️ #Wetbulb🌡️ #SummerSolsticeHeatwaves
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Perhaps the best approach would be to get a device that can measure the local wet bulb globe temperature. This seems to be an option:
https://kestrelmeters.com/kestrel-5400-heat-stress-tracker
Does anyone have recommendations for wet bulb thermometers?
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I now have two apps that tell me the wet bulb globe temperature (#WBGT), as well as a forecast:
- Heat Safety: https://play.google.com/store/apps/details?id=com.qvyshift.heat
- AIHA Heat Stress App: https://play.google.com/store/apps/details?id=com.aiha.prodhttps://www.aiha.org/press/aiha-launches-new-heat-stress-mobile-app
Sadly, these apps don't agree on the current WBGT. The man with one clock knows what time it is, the man with two clocks isn't quite sure!
Both depend on the National Weather Service, so who knows how long they will remain trustworthy, given Trump's war on weather forecasting.
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What the heck is “#CornSweat” and is it making the Midwest more dangerous?
It’s pretty much just as gross as it sounds.
"In one 2020 study, researchers from the Harvard-Smithsonian Center for Astrophysics analyzed a past summer heat wave in the Midwest and found that cropland — most of which comprised corn in this part of the country — can increase moisture in the air above it by up to 40 percent."
by Benji Jones
Aug 29, 2024"Ah, yes, late August in the Midwest: a time for popsicles by the lake, a trip to the county fair, and, of course, extreme humidity made more miserable by … corn sweat.
"Corn sweat. It’s a thing! And people are talking about it.
The term refers to the moisture released by fields of corn during hot and sunny weather. Like all other plants, corn transpires — meaning, it sucks up water from the ground and expels it into the air as a way to stay cool and distribute nutrients. Moisture also enters the air when water in the soil evaporates. Together with transpiration, this process is called #evapotranspiration.
"So, where you find loads of plants packed tightly into one place, whether the Amazon rainforest or #Iowa, humidity can skyrocket during hot and especially sunny periods, making the air feel oppressive.
"That’s what happened this week: A late-summer #heatwave brought record and near-record temperatures to parts of the Midwest where there also happen to be vast fields of corn. With plenty of sunlight and temperatures in the high 90s, it was enough to make corn sweat, producing extremely uncomfortable weather.
"It’s not that corn sweats more than other plants — an acre releases less moisture on average than, say, a large oak tree — but the Midwest has a lot of corn in late August. In Iowa, for example, more than two-thirds of the area is farmland, and corn is the top crop (followed by #soybeans, which, by the way, also sweat)."
[...]
"Again, it’s not just crops across the #Midwest that release moisture, increase humidity, and make summers feel disgusting (I know firsthand; I grew up in Iowa). The millions of acres of #prairie that industrial farmland replaced — mostly to feed livestock and make ethanol — would have also produced loads of moisture, Basso said.
"But there are some key differences between native #ecosystems and #IndustrialFarmland, he added. '#NativePrairies are diverse ecosystems with a variety of plant species, each with different root depths and water needs, helping to create a balanced moisture cycle,' he told me. 'In contrast, corn and #soy #monocultures are uniform and can draw water from the soil more quickly.'"
#CimateChange #IndustrialAgriculture #BigAg #Wetbulb #Fieldworkers #HeatWaves
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What the heck is “#CornSweat” and is it making the Midwest more dangerous?
It’s pretty much just as gross as it sounds.
"In one 2020 study, researchers from the Harvard-Smithsonian Center for Astrophysics analyzed a past summer heat wave in the Midwest and found that cropland — most of which comprised corn in this part of the country — can increase moisture in the air above it by up to 40 percent."
by Benji Jones
Aug 29, 2024"Ah, yes, late August in the Midwest: a time for popsicles by the lake, a trip to the county fair, and, of course, extreme humidity made more miserable by … corn sweat.
"Corn sweat. It’s a thing! And people are talking about it.
The term refers to the moisture released by fields of corn during hot and sunny weather. Like all other plants, corn transpires — meaning, it sucks up water from the ground and expels it into the air as a way to stay cool and distribute nutrients. Moisture also enters the air when water in the soil evaporates. Together with transpiration, this process is called #evapotranspiration.
"So, where you find loads of plants packed tightly into one place, whether the Amazon rainforest or #Iowa, humidity can skyrocket during hot and especially sunny periods, making the air feel oppressive.
"That’s what happened this week: A late-summer #heatwave brought record and near-record temperatures to parts of the Midwest where there also happen to be vast fields of corn. With plenty of sunlight and temperatures in the high 90s, it was enough to make corn sweat, producing extremely uncomfortable weather.
"It’s not that corn sweats more than other plants — an acre releases less moisture on average than, say, a large oak tree — but the Midwest has a lot of corn in late August. In Iowa, for example, more than two-thirds of the area is farmland, and corn is the top crop (followed by #soybeans, which, by the way, also sweat)."
[...]
"Again, it’s not just crops across the #Midwest that release moisture, increase humidity, and make summers feel disgusting (I know firsthand; I grew up in Iowa). The millions of acres of #prairie that industrial farmland replaced — mostly to feed livestock and make ethanol — would have also produced loads of moisture, Basso said.
"But there are some key differences between native #ecosystems and #IndustrialFarmland, he added. '#NativePrairies are diverse ecosystems with a variety of plant species, each with different root depths and water needs, helping to create a balanced moisture cycle,' he told me. 'In contrast, corn and #soy #monocultures are uniform and can draw water from the soil more quickly.'"
#CimateChange #IndustrialAgriculture #BigAg #Wetbulb #Fieldworkers #HeatWaves
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What the heck is “#CornSweat” and is it making the Midwest more dangerous?
It’s pretty much just as gross as it sounds.
"In one 2020 study, researchers from the Harvard-Smithsonian Center for Astrophysics analyzed a past summer heat wave in the Midwest and found that cropland — most of which comprised corn in this part of the country — can increase moisture in the air above it by up to 40 percent."
by Benji Jones
Aug 29, 2024"Ah, yes, late August in the Midwest: a time for popsicles by the lake, a trip to the county fair, and, of course, extreme humidity made more miserable by … corn sweat.
"Corn sweat. It’s a thing! And people are talking about it.
The term refers to the moisture released by fields of corn during hot and sunny weather. Like all other plants, corn transpires — meaning, it sucks up water from the ground and expels it into the air as a way to stay cool and distribute nutrients. Moisture also enters the air when water in the soil evaporates. Together with transpiration, this process is called #evapotranspiration.
"So, where you find loads of plants packed tightly into one place, whether the Amazon rainforest or #Iowa, humidity can skyrocket during hot and especially sunny periods, making the air feel oppressive.
"That’s what happened this week: A late-summer #heatwave brought record and near-record temperatures to parts of the Midwest where there also happen to be vast fields of corn. With plenty of sunlight and temperatures in the high 90s, it was enough to make corn sweat, producing extremely uncomfortable weather.
"It’s not that corn sweats more than other plants — an acre releases less moisture on average than, say, a large oak tree — but the Midwest has a lot of corn in late August. In Iowa, for example, more than two-thirds of the area is farmland, and corn is the top crop (followed by #soybeans, which, by the way, also sweat)."
[...]
"Again, it’s not just crops across the #Midwest that release moisture, increase humidity, and make summers feel disgusting (I know firsthand; I grew up in Iowa). The millions of acres of #prairie that industrial farmland replaced — mostly to feed livestock and make ethanol — would have also produced loads of moisture, Basso said.
"But there are some key differences between native #ecosystems and #IndustrialFarmland, he added. '#NativePrairies are diverse ecosystems with a variety of plant species, each with different root depths and water needs, helping to create a balanced moisture cycle,' he told me. 'In contrast, corn and #soy #monocultures are uniform and can draw water from the soil more quickly.'"
#CimateChange #IndustrialAgriculture #BigAg #Wetbulb #Fieldworkers #HeatWaves
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As Indian Summer Breaks Temperature Records, Birds Feel The Heat
Rescue organisations like PETA India, Wildlife SOS and Wildlife Rescue received more calls of birds with sunstroke and dehydration symptoms this summer
ByTanvi Deshpande,Jahnavi Thotakuru|
4 Aug, 2024"The impact of #ExtremeHeat has been seen and felt on the ground for a long time now.
"#WildlifeSOS, a non-profit organisation working in #wildlife rescue and rehabilitation in India, reported an increased number of calls about birds affected by extreme heat this summer. In June 2024, the organisation received 35-40 rescue calls daily in Delhi-National Capital Region, higher than in April and May. Until June, the organisation had rescued over 220 birds suffering from heat, including species such as #BlackKites, #sparrows, #BlueRockPigeons, #BarnOwls, and #Peacocks.
“'The recent heat waves have had severe impacts on the avian population in India,' said Kartick Satyanarayan, co-founder and CEO, Wildlife SOS. 'Prolonged exposure to high temperatures can lead to dehydration, as birds struggle to find adequate water, impairing their bodily functions and potentially leading to severe health issues or even death. Heat stroke is a significant risk, with symptoms such as laboured breathing, drooling, lethargy and hyperthermia, which can cause organ failure and be fatal if not treated promptly.'
"On receiving a call about a bird in distress, most organisations guide the caller on immediate steps to be taken to stabilise the bird. Based on the bird’s situation, an ambulance might be sent and the bird moved to a facility.
“'We ask the caller to secure the bird, to take it to a place where there is shade and away from predators like cats, dogs or other birds because the bird is already in a comatose state,' said Bandhanpreet Kaur, manager of veterinary services at PETA India. 'Then we ask them to either pour cold water over its body or wrap the bird in a cold towel/any moist cloth…to reduce their body temperature immediately. And if electrolyte is available, we ask them to use a syringe or damp cloth to put a few drops in the bird’s mouth.'
"PETA India handled 90 cases of birds affected by extreme heat this year."
#India #Biodiversity #ClimateChange #ClimateCrisis #GlobalWarming #ExtremeHeat #HeatWaves #Wetbulb #Environment #Extinction #Wildlife
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We had 3 days last week where the air temp exceeded 37°C and the humidity was above 90%...in Europe last year 50,000 people died as a direct result of excessive heat. I wonder how many of those days were wet bulb?
Wet Bulb events need to be explained better to everyone &, where there's a risk of a 'wet bulb' they need to be added to the weather forecast, so people can be better prepared to protect their health.
https://www.theguardian.com/world/article/2024/aug/12/heat-aggravated-by-carbon-pollution-killed-50000-in-europe-last-year-study -
#ClimateDiary for July 10, 2024 -- #TornadoWarnings in #NewHampshire, #FlashFlood warnings in #Vermont. Still hot and humid in #Maine and feels like #FloridaWeather. It was hotter on the coast than it was inland (!!!). No sea breeze!
#Wetbulb #ClimateChange #ClimateCrisis #ClimateCatastrophe #GlobalWarming #WarmingOceans -
#EasternUS to experience dangerous combination of #ExtremeHeat, #humidity
Surging temperatures, intense sunshine and high humidity will make this week's heat wave in the #Northeast tough to deal with for those without air conditioning.
By Alex Sosnowski, AccuWeather senior meteorologist
Published Jul 9, 2024
'Little to no relief from the heat and humidity will continue through the overnight hours, adding stress to power grids and making it very uncomfortable for those without air conditioning,' said AccuWeather Meteorologist Brandon Buckingham.
"By the time the urban areas begin to cool off at night, the sun is already rising and applying heat for the new day."
#Heatwave #Wetbulb #ClimateCrisis #ClimateChange #ClimateCatastrophe
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June 18 had hundreds of worshippers die in #Makkah because they spend several hours without relief in the open sun at high #wetbulb temperature of 29.5°C at 2pm.
26°C gets dangerous for vulnerable people. 30°C affects everyone, if I'm not mistaken.In case you have a *celsius* chart for risky wetbulb or for heat index, I'd be very much obliged if you posted it here. Thank you! The ones I can find on the web are all in Fahrenheit.
This https://meteologix.com/fr/observations/makkah/wet-bulb-temperature/20240620-0900z.html#obs-detail-410310-72h opens the line chart as in the picture for wetbulb temperature in Mina near #mekka
The website is the Engllish version of German @kachelmannwetter
You can just click a temperature icon on the map to get a line chart of the past 72 hours for a chosen parameter! Very cool, isn't it? -
And if it's too hot for humans, it's probably too hot for other lifeforms.
How hot is too hot for humans? Understanding #Wetbulb temperatures
Humans sweat to keep cool. But when that sweat can't evaporate, heat gets dangerous
Jade Prévost-Manuel · CBC News · Posted: Jul 03, 2021
"At theoretical wet-bulb temperatures, evaporation and cooling can no longer take place because the atmosphere is fully saturated with water. And when the wet-bulb temperature reaches 35 C, it crosses a threshold at which humans can no longer lose internal body heat and cool themselves."
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#WetBulbTemperature
> Research published in the Journal of Applied Physiology in 2022 suggested that limit could be lower. Scientists placed young, healthy adults in chambers that mimicked high wet-bulb temperatures and had them perform tasks that mirrored those of daily life. They found the limit could be much lower — between 30 C and 31 C.https://www.japantimes.co.jp/environment/2023/08/10/climate-change/climate-change-wet-bulb-temperatures/
#ClimateChange #GlobalWarming #GreenhouseEffect #WetBulb -
"#ClimateChange projections for the MENA region generally point towards a warmer and drier climate with increased extreme events by the end of the twenty-first century although by varying magnitudes. reported that, according to the Coupled Model Intercomparison Project—sixth phase (CMIP6 ) model projections, by the end of the twenty-first century there will be widespread warming over Africa more pronounced over the Sahara, with reduced precipitation amounts over northern and southern parts of the continent and increased in central parts, suggesting a broadening of the Hadley Cells. The median warming in the CMIP6 Multi-Model Ensemble Mean (MMEM) is found to be higher than that in the Coupled Model Intercomparison Project—fifth phase (CMIP6 ) MMEM over most of Africa, reaching up to 2.5 K over some regions, with a mixed pattern in terms of precipitation. Chen et al. showed the extremes in CMIP6 are generally an improvement with respect to those given by the models that integrated CMIP5, in particular for the annual maximum of the daily maximum and annual minimum of the daily minimum air temperatures.
"Coupled with increased sea surface temperatures and surface evaporation leading to higher atmospheric
moisture levels, future #WetBulb temperatures over Southwest Asia are projected to exceed a threshold for human #habitability. To date, most of the work conducted on the analysis of CMIP6 model data has focused on selected variables, in particular mean and extreme temperature and precipitation, with less attention paid to circulation patterns and seasonal changes, which impact regional and local conditions. For example, a change in the position and/or strength of the thermal (heat) lows and #subtropical highs over the #MiddleEast and #NorthAfrica will impact the atmospheric circulation and wind patterns locally. This can in turn impact the transport of moisture and the dust/aerosol emissions and transport and hence the atmospheric radiation fields. Such circulation changes in a warming climate have not been comprehensively discussed, and will be explored here for a CMIP6 MME for the extended MENA region."#ClimateCrisis #IncreasedAtmosphericMoisture #Humidity #Uninhabitable
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It's been nice to be in the #HabitableZone for a few weeks after the last #NorEaster. Today was a bit on the warm side, but soon #Hazy / #Wildfires / #ExtremeHeat will be here. I think this years' theme in #Maine will be #Drought rather than humid #Wetbulb -- more like 2022. Better store that #Rainwater -- but make sure you put a layer of #OliveOil on top (a good use for old/rancid oil) to keep the #Mosquitoes at bay.
#MaineWeather #ClimateChange #ExtremeWeather #Maine -
How To Survive A Wet Bulb Event - Territories across the northern hemisphere are suffering through record-breaking h... - https://hackaday.com/2023/07/27/how-to-survive-a-wet-bulb-event/ #airconditioner #currentevents #wetbulbevent #originalart #science #wetbulb #hvac #ac
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I hope this #summer finally convinces enough people that we're not trying to avoid #ClimateChange-induced #disasters and suffering, but mitigate them.
#HeatDome #WetBulb #HeatIndex #WaterTemperature #Hurricanes #Tornados
https://www.washingtonpost.com/weather/2023/07/19/heat-wave-how-long-south-phoenix/
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#Florida is in hot water as #OceanTemperatures rise, threatening the state's #CoralReefs
WUSF Public Media - WUSF 89.7 | By Associated Press
Published July 11, 2023 at 10:28 AM EDT"Record #global ocean heating has invaded Florida with a vengeance.
"Water temperatures in the mid-90s (mid-30s Celsius) are threatening delicate coral reefs, depriving swimmers of cooling dips and adding a bit more ick to the Sunshine State's already oppressive summer weather. Forecasters are warning of temperatures that with humidity will feel like 110 degrees (43 degrees Celsius) by week's end.
"The #HeatDome that baked #Texas and #Mexico for much of the early summer has oozed its way to Florida with sunshine, little to no cooling clouds or rain, but humidity worsened by the hot oceans.
"If that's not enough, Florida is about to get a dose of #dust from Africa's #Saharan desert that's likely to hurt air quality."
#DustStorm #ClimateCrisis #ClimateChange #ClimateCatastrophe #WetBulb #AirQuality
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#Florida is in hot water as #OceanTemperatures rise, threatening the state's #CoralReefs
WUSF Public Media - WUSF 89.7 | By Associated Press
Published July 11, 2023 at 10:28 AM EDT"Record #global ocean heating has invaded Florida with a vengeance.
"Water temperatures in the mid-90s (mid-30s Celsius) are threatening delicate coral reefs, depriving swimmers of cooling dips and adding a bit more ick to the Sunshine State's already oppressive summer weather. Forecasters are warning of temperatures that with humidity will feel like 110 degrees (43 degrees Celsius) by week's end.
"The #HeatDome that baked #Texas and #Mexico for much of the early summer has oozed its way to Florida with sunshine, little to no cooling clouds or rain, but humidity worsened by the hot oceans.
"If that's not enough, Florida is about to get a dose of #dust from Africa's #Saharan desert that's likely to hurt air quality."
#DustStorm #ClimateCrisis #ClimateChange #ClimateCatastrophe #WetBulb #AirQuality
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#Florida is in hot water as #OceanTemperatures rise, threatening the state's #CoralReefs
WUSF Public Media - WUSF 89.7 | By Associated Press
Published July 11, 2023 at 10:28 AM EDT"Record #global ocean heating has invaded Florida with a vengeance.
"Water temperatures in the mid-90s (mid-30s Celsius) are threatening delicate coral reefs, depriving swimmers of cooling dips and adding a bit more ick to the Sunshine State's already oppressive summer weather. Forecasters are warning of temperatures that with humidity will feel like 110 degrees (43 degrees Celsius) by week's end.
"The #HeatDome that baked #Texas and #Mexico for much of the early summer has oozed its way to Florida with sunshine, little to no cooling clouds or rain, but humidity worsened by the hot oceans.
"If that's not enough, Florida is about to get a dose of #dust from Africa's #Saharan desert that's likely to hurt air quality."
#DustStorm #ClimateCrisis #ClimateChange #ClimateCatastrophe #WetBulb #AirQuality
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#Florida is in hot water as #OceanTemperatures rise, threatening the state's #CoralReefs
WUSF Public Media - WUSF 89.7 | By Associated Press
Published July 11, 2023 at 10:28 AM EDT"Record #global ocean heating has invaded Florida with a vengeance.
"Water temperatures in the mid-90s (mid-30s Celsius) are threatening delicate coral reefs, depriving swimmers of cooling dips and adding a bit more ick to the Sunshine State's already oppressive summer weather. Forecasters are warning of temperatures that with humidity will feel like 110 degrees (43 degrees Celsius) by week's end.
"The #HeatDome that baked #Texas and #Mexico for much of the early summer has oozed its way to Florida with sunshine, little to no cooling clouds or rain, but humidity worsened by the hot oceans.
"If that's not enough, Florida is about to get a dose of #dust from Africa's #Saharan desert that's likely to hurt air quality."
#DustStorm #ClimateCrisis #ClimateChange #ClimateCatastrophe #WetBulb #AirQuality
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#Florida is in hot water as #OceanTemperatures rise, threatening the state's #CoralReefs
WUSF Public Media - WUSF 89.7 | By Associated Press
Published July 11, 2023 at 10:28 AM EDT"Record #global ocean heating has invaded Florida with a vengeance.
"Water temperatures in the mid-90s (mid-30s Celsius) are threatening delicate coral reefs, depriving swimmers of cooling dips and adding a bit more ick to the Sunshine State's already oppressive summer weather. Forecasters are warning of temperatures that with humidity will feel like 110 degrees (43 degrees Celsius) by week's end.
"The #HeatDome that baked #Texas and #Mexico for much of the early summer has oozed its way to Florida with sunshine, little to no cooling clouds or rain, but humidity worsened by the hot oceans.
"If that's not enough, Florida is about to get a dose of #dust from Africa's #Saharan desert that's likely to hurt air quality."
#DustStorm #ClimateCrisis #ClimateChange #ClimateCatastrophe #WetBulb #AirQuality
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Why #nighttime #heat can be so dangerous and why it’s getting worse
On average, nights are warming faster than days in most of the United States, a national climate assessment found.
By Rachel Ramirez, CNN, Jun 30, 2023
"Summers are getting hotter than ever, shattering all-time high temperature records, straining the energy grid and damaging critical infrastructure.
"#HeatWaves also are coming to include another increasingly dangerous element: overnight temperatures that don’t cool down enough to offer sufficient reprieve from stifling heat, particularly for people without access to #AirConditioning.
“'Most people don’t realize that hot nighttime temperatures have been outpacing daytime temperature increases across most populated regions worldwide in recent decades,' Columbia University’s Data Science Institute postdoctoral research scientist Kelton Minor told CNN.
“'We think it’s because as the days grow warmer, there is more moisture in the air that traps the heat,' the Medical Society Consortium on Climate and Health’s executive director, Lisa Patel, told CNN. 'During the day, that moisture reflects the heat, but at night, it traps the heat in.'
#Increasing nighttime heat is even more common in #cities because of the #UrbanHeatIsland effect, in which #metro areas are significantly hotter than their surroundings.
"Places with a lot of #asphalt, #concrete, buildings and #freeways absorb more of the sun’s heat than areas with ample #parks, #rivers and #tree-lined streets. At night, when temperatures are supposed to cool down, the retained heat is released back into the air, said University of Washington climate and health expert Kristie Ebi.
"Areas with a lot of #GreenSpace – with grass and trees that reflect sunlight and create shade – are cooler on summer’s hottest days, she said.
“'Many cities put together #CoolingShelters, but people have to know where they are, how to get to them and what hours they operate,' Ebi told CNN, noting city officials must rethink #UrbanPlanning to consider #ClimateChange."
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‘Extreme threat’: Large swathe of southern US at dangerous ‘wet bulb temperature’
by Jeremy Tanner - 06/29/23
"Readings of a key indicator of heat exposure danger have reached the highest possible threat level in multiple southern states, as well as in a few states in the #Midwest.
"When it comes to the 'wet bulb temperature,' nearly all of #Louisiana, #Mississippi, and #Arkansas are under 'extreme threat.' The wet bulb temperature measures multiple stressors on the human body in direct sunlight, not in the shade, as the #HeatIndex does.
"When it’s hot, humans sweat to cool off, but if the humidity is also high enough there’s a point at which sweat loses its cooling effect.
"The upper limit that humans could withstand was thought to be 95 F at 100% humidity, according to a 2010 study. New research out of Penn State University’s Noll Laboratory found that the critical limit is in fact even lower – 88 F at 100% humidity."
#ExtremeWeather #WetBulb #ExtremeHeat #Humidity #Climate #ClimateCrisis #ClimateCatastrophe #USA #SouthernUSA