#dcwx — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #dcwx, aggregated by home.social.
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LWX issues Area Forecast Discussion (AFD) at May 14, 10:51 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605141451-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 10:51 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605141451-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 10:51 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605141451-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 10:51 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605141451-KLWX-FXUS61-AFDLWX
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[Delayed Report] 2 SW Churchville [Augusta Co, VA] Trained Spotter reports Hail of quarter size (M1.00 inch) at 13 May, 8:00 PM EDT --
https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=LWX&sts=202605140000&ets=202605140000
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[Delayed Report] 2 SW Churchville [Augusta Co, VA] Trained Spotter reports Hail of quarter size (M1.00 inch) at 13 May, 8:00 PM EDT --
https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=LWX&sts=202605140000&ets=202605140000
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[Delayed Report] 2 SW Churchville [Augusta Co, VA] Trained Spotter reports Hail of quarter size (M1.00 inch) at 13 May, 8:00 PM EDT --
https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=LWX&sts=202605140000&ets=202605140000
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[Delayed Report] 2 SW Churchville [Augusta Co, VA] Trained Spotter reports Hail of quarter size (M1.00 inch) at 13 May, 8:00 PM EDT --
https://mesonet.agron.iastate.edu/lsr/?by=wfo&wfo=LWX&sts=202605140000&ets=202605140000
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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026MARINE
A cold front is pushing through the waters early this morning, bringing northwest winds. Those winds are relatively light at the moment but should increase fairly rapidly after sunrise. Expect 20 to 25 kt gusts through the day, with a Small Craft Advisory going into effect for all waters at 6 AM. The advisory continues tonight and Friday, although some of the interior waters could have lighter winds for a time tonight. Winds may be slightly lighter Friday compared to Thursday. The advisory ends at 3 PM, although there is some uncertainty with how quickly winds decrease. Light winds are expected by Friday evening as high pressure builds south of the area.
South to southwest winds develop Saturday. Gusts could occasionally approach advisory criteria, but appear to stay mostly below at this time.
Winds stay below SCA criteria Sunday and Monday. Southwesterly winds gradually flow southeast by Monday night.
TIDES/COASTAL FLOODING
Anomalies have peaked, with locations in action stage early this morning. Increasing northwest flow will bring lower water levels today.
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Small Craft Advisory until 3 PM EDT Friday for MDZ008.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 3 PM EDT Friday for ANZ530>543. -
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026MARINE
A cold front is pushing through the waters early this morning, bringing northwest winds. Those winds are relatively light at the moment but should increase fairly rapidly after sunrise. Expect 20 to 25 kt gusts through the day, with a Small Craft Advisory going into effect for all waters at 6 AM. The advisory continues tonight and Friday, although some of the interior waters could have lighter winds for a time tonight. Winds may be slightly lighter Friday compared to Thursday. The advisory ends at 3 PM, although there is some uncertainty with how quickly winds decrease. Light winds are expected by Friday evening as high pressure builds south of the area.
South to southwest winds develop Saturday. Gusts could occasionally approach advisory criteria, but appear to stay mostly below at this time.
Winds stay below SCA criteria Sunday and Monday. Southwesterly winds gradually flow southeast by Monday night.
TIDES/COASTAL FLOODING
Anomalies have peaked, with locations in action stage early this morning. Increasing northwest flow will bring lower water levels today.
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Small Craft Advisory until 3 PM EDT Friday for MDZ008.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 3 PM EDT Friday for ANZ530>543. -
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026MARINE
A cold front is pushing through the waters early this morning, bringing northwest winds. Those winds are relatively light at the moment but should increase fairly rapidly after sunrise. Expect 20 to 25 kt gusts through the day, with a Small Craft Advisory going into effect for all waters at 6 AM. The advisory continues tonight and Friday, although some of the interior waters could have lighter winds for a time tonight. Winds may be slightly lighter Friday compared to Thursday. The advisory ends at 3 PM, although there is some uncertainty with how quickly winds decrease. Light winds are expected by Friday evening as high pressure builds south of the area.
South to southwest winds develop Saturday. Gusts could occasionally approach advisory criteria, but appear to stay mostly below at this time.
Winds stay below SCA criteria Sunday and Monday. Southwesterly winds gradually flow southeast by Monday night.
TIDES/COASTAL FLOODING
Anomalies have peaked, with locations in action stage early this morning. Increasing northwest flow will bring lower water levels today.
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Small Craft Advisory until 3 PM EDT Friday for MDZ008.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 3 PM EDT Friday for ANZ530>543. -
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026WHAT HAS CHANGED
Small Craft Advisories issued for today through Friday. Patchy fog this morning will likely persist until winds pick up closer to sunrise. Some showers may linger near the Chesapeake Bay past sunrise. Added a mention of sprinkles this afternoon for northern areas.
KEY MESSAGES
1) Below normal temperatures are expected through Friday.
2) Above average temperatures are expected beginning this weekend along with daily shower and thunderstorm chances through the middle of next week.
DISCUSSION
KEY MESSAGE 1...Below normal temperatures are expected through Friday.
A closed upper low is located north of Lake Ontario this morning while a notable vort max is swinging into the upper Ohio Valley. It appears the surface cold front has pushed through all but southern Maryland. However, the lack of immediate pressure rises (thus wind) and dry advection is resulting in patchy fog where there are cloud breaks. Locally dense fog is possible, but should be relatively brief. Toward sunrise, northwest winds should start increasing which will help clear out the fog. A few showers are also trailing the front. As the vort max approaches this morning, some guidance indicates additional showers may form along/east of I-95 through mid morning.
The closed low will drift southeastward across the northern Mid Atlantic today, causing surface low pressure to redevelop near New England. The primary effects will be broken to overcast stratocumulus and much cooler temperatures (lower elevations ranging from the upper 50s to mid 60s). Upslope rain showers will continue in the northwest flow through the day. Some wet snow is even possible through midday above 4000 feet as 850 mb temperatures drop near or just below 0C. While measurable rain is unlikely east of the Alleghenies, did add a mention of scattered sprinkles to northern areas as there may be enough shallow instability to produce rain drops. This shows up in CAM reflectivity forecasts as well. Northwest winds will also gust 20 to 30 mph through the day. Low temperatures will drop back into the 40s to near 50 tonight, with 30s possible in the higher elevations. There should be enough lingering wind to preclude frost concerns, but it could be close in some of the elevated sheltered valleys.
The upper low will push offshore on Friday, which will lead to warmer temperatures. Even so, readings will likely fall a few degrees short of normal. While there should be more breaks of sun compared to Thursday, mid and high level clouds may increase in the afternoon. Northwesterly winds will still be a bit gusty, but should start diminishing during the afternoon as surface high pressure builds south of the area.
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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026WHAT HAS CHANGED
Small Craft Advisories issued for today through Friday. Patchy fog this morning will likely persist until winds pick up closer to sunrise. Some showers may linger near the Chesapeake Bay past sunrise. Added a mention of sprinkles this afternoon for northern areas.
KEY MESSAGES
1) Below normal temperatures are expected through Friday.
2) Above average temperatures are expected beginning this weekend along with daily shower and thunderstorm chances through the middle of next week.
DISCUSSION
KEY MESSAGE 1...Below normal temperatures are expected through Friday.
A closed upper low is located north of Lake Ontario this morning while a notable vort max is swinging into the upper Ohio Valley. It appears the surface cold front has pushed through all but southern Maryland. However, the lack of immediate pressure rises (thus wind) and dry advection is resulting in patchy fog where there are cloud breaks. Locally dense fog is possible, but should be relatively brief. Toward sunrise, northwest winds should start increasing which will help clear out the fog. A few showers are also trailing the front. As the vort max approaches this morning, some guidance indicates additional showers may form along/east of I-95 through mid morning.
The closed low will drift southeastward across the northern Mid Atlantic today, causing surface low pressure to redevelop near New England. The primary effects will be broken to overcast stratocumulus and much cooler temperatures (lower elevations ranging from the upper 50s to mid 60s). Upslope rain showers will continue in the northwest flow through the day. Some wet snow is even possible through midday above 4000 feet as 850 mb temperatures drop near or just below 0C. While measurable rain is unlikely east of the Alleghenies, did add a mention of scattered sprinkles to northern areas as there may be enough shallow instability to produce rain drops. This shows up in CAM reflectivity forecasts as well. Northwest winds will also gust 20 to 30 mph through the day. Low temperatures will drop back into the 40s to near 50 tonight, with 30s possible in the higher elevations. There should be enough lingering wind to preclude frost concerns, but it could be close in some of the elevated sheltered valleys.
The upper low will push offshore on Friday, which will lead to warmer temperatures. Even so, readings will likely fall a few degrees short of normal. While there should be more breaks of sun compared to Thursday, mid and high level clouds may increase in the afternoon. Northwesterly winds will still be a bit gusty, but should start diminishing during the afternoon as surface high pressure builds south of the area.
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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Thu May 14 2026WHAT HAS CHANGED
Small Craft Advisories issued for today through Friday. Patchy fog this morning will likely persist until winds pick up closer to sunrise. Some showers may linger near the Chesapeake Bay past sunrise. Added a mention of sprinkles this afternoon for northern areas.
KEY MESSAGES
1) Below normal temperatures are expected through Friday.
2) Above average temperatures are expected beginning this weekend along with daily shower and thunderstorm chances through the middle of next week.
DISCUSSION
KEY MESSAGE 1...Below normal temperatures are expected through Friday.
A closed upper low is located north of Lake Ontario this morning while a notable vort max is swinging into the upper Ohio Valley. It appears the surface cold front has pushed through all but southern Maryland. However, the lack of immediate pressure rises (thus wind) and dry advection is resulting in patchy fog where there are cloud breaks. Locally dense fog is possible, but should be relatively brief. Toward sunrise, northwest winds should start increasing which will help clear out the fog. A few showers are also trailing the front. As the vort max approaches this morning, some guidance indicates additional showers may form along/east of I-95 through mid morning.
The closed low will drift southeastward across the northern Mid Atlantic today, causing surface low pressure to redevelop near New England. The primary effects will be broken to overcast stratocumulus and much cooler temperatures (lower elevations ranging from the upper 50s to mid 60s). Upslope rain showers will continue in the northwest flow through the day. Some wet snow is even possible through midday above 4000 feet as 850 mb temperatures drop near or just below 0C. While measurable rain is unlikely east of the Alleghenies, did add a mention of scattered sprinkles to northern areas as there may be enough shallow instability to produce rain drops. This shows up in CAM reflectivity forecasts as well. Northwest winds will also gust 20 to 30 mph through the day. Low temperatures will drop back into the 40s to near 50 tonight, with 30s possible in the higher elevations. There should be enough lingering wind to preclude frost concerns, but it could be close in some of the elevated sheltered valleys.
The upper low will push offshore on Friday, which will lead to warmer temperatures. Even so, readings will likely fall a few degrees short of normal. While there should be more breaks of sun compared to Thursday, mid and high level clouds may increase in the afternoon. Northwesterly winds will still be a bit gusty, but should start diminishing during the afternoon as surface high pressure builds south of the area.
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LWX issues Short-term Forecast (NOW) at May 14, 5:11 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140911-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 14, 5:11 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140911-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 14, 5:11 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140911-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 14, 5:11 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140911-KLWX-FPUS71-NOWLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 4:01 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140801-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 4:01 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140801-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 4:01 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140801-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 14, 4:01 AM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140801-KLWX-FXUS61-AFDLWX
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HAGERSTOWN MD May 13 Climate Report: High: 70 Low: 51 Precip: 0.26" Snow: Missing
https://mesonet.agron.iastate.edu/p.php?pid=202605140631-KLWX-CDUS41-CLIHGR
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HAGERSTOWN MD May 13 Climate Report: High: 70 Low: 51 Precip: 0.26" Snow: Missing
https://mesonet.agron.iastate.edu/p.php?pid=202605140631-KLWX-CDUS41-CLIHGR
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HAGERSTOWN MD May 13 Climate Report: High: 70 Low: 51 Precip: 0.26" Snow: Missing
https://mesonet.agron.iastate.edu/p.php?pid=202605140631-KLWX-CDUS41-CLIHGR
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HAGERSTOWN MD May 13 Climate Report: High: 70 Low: 51 Precip: 0.26" Snow: Missing
https://mesonet.agron.iastate.edu/p.php?pid=202605140631-KLWX-CDUS41-CLIHGR
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LWX issues Area Forecast Discussion (AFD) at May 13, 9:30 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140130-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 13, 9:30 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140130-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 13, 9:30 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140130-KLWX-FXUS61-AFDLWX
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LWX issues Area Forecast Discussion (AFD) at May 13, 9:30 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140130-KLWX-FXUS61-AFDLWX
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LWX continues Marine Warning [wind: >34 KTS, hail: <.75 IN] for Chesapeake Bay from Pooles Island to Sandy Point MD, Chesapeake Bay north of Pooles Island MD, Chester River to Queenstown MD, Patapsco River including Baltimore Harbor [AN] till 9:30 PM EDT
https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KLWX-MA-W-0056_2026-05-14T01:07Z
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LWX continues Marine Warning [wind: >34 KTS, hail: <.75 IN] for Chesapeake Bay from Pooles Island to Sandy Point MD, Chesapeake Bay north of Pooles Island MD, Chester River to Queenstown MD, Patapsco River including Baltimore Harbor [AN] till 9:30 PM EDT
https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KLWX-MA-W-0056_2026-05-14T01:07Z
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LWX continues Marine Warning [wind: >34 KTS, hail: <.75 IN] for Chesapeake Bay from Pooles Island to Sandy Point MD, Chesapeake Bay north of Pooles Island MD, Chester River to Queenstown MD, Patapsco River including Baltimore Harbor [AN] till 9:30 PM EDT
https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KLWX-MA-W-0056_2026-05-14T01:07Z
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LWX continues Marine Warning [wind: >34 KTS, hail: <.75 IN] for Chesapeake Bay from Pooles Island to Sandy Point MD, Chesapeake Bay north of Pooles Island MD, Chester River to Queenstown MD, Patapsco River including Baltimore Harbor [AN] till 9:30 PM EDT
https://mesonet.agron.iastate.edu/vtec/f/2026-O-CON-KLWX-MA-W-0056_2026-05-14T01:07Z
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LWX issues Short-term Forecast (NOW) at May 13, 9:03 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140103-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 13, 9:03 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140103-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 13, 9:03 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140103-KLWX-FPUS71-NOWLWX
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LWX issues Short-term Forecast (NOW) at May 13, 9:03 PM EDT
https://mesonet.agron.iastate.edu/p.php?pid=202605140103-KLWX-FPUS71-NOWLWX
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La lluvia del miércoles llegará alrededor del mediodía o a primera hora de la tarde en el centro de #Virginia y el centro de #Maryland y continuará hasta el final de la noche, con algunas tormentas eléctricas que aparecerán después de las 7 p. m. según los modelos de corto alcance. Las temperaturas el resto de la semana continuarán en los 60 superiores/70 bajos. #VAwx #MDwx #DCwx
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Rain on Wednesday will arrive around noon or early afternoon in central #Virginia and central #Maryland and continue through late evening, with some thunderstorms popping up after 7pm according to the short range models. Temperatures the rest of the week will continue in the upper 60s/low 70s. #VAwx #MDwx #DCwx
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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
346 AM EDT Fri Apr 24 2026WHAT HAS CHANGED
The signal for afternoon convection has consolidated for today with the main threat area stretching from east of the Blue Ridge to the Chesapeake Bay. Any severe threat will be very isolated given the lack of vertical shear.
KEY MESSAGES
1) A frontal boundary will linger nearby through Saturday, leading to chances for showers and thunderstorms at times.
2) High pressure builds in early next week, before the next system approaches from the west on Tuesday.
DISCUSSION
KEY MESSAGE 1...A frontal boundary will linger nearby through Saturday, leading to chances for showers and thunderstorms at times.
The latest surface analysis places a wavy stationary boundary just north of the Mason-Dixon Line. This frontal system extends back across much of the Great Lakes to a triple point low center over eastern Minnesota. Locally within the warm/moist sector a seasonably mild air mass remains in place with widespread early morning temperatures in the mid 50s to low 60s. This is accompanied by some passing mid/high clouds, but conditions are dry amidst mostly light winds.
Looking ahead, the key synoptic players are a robust upper low spinning across much of the Northern Rockies/adjacent Plains region into south-central Canada as well as a separate low off the coast of Nova Scotia. The Eastern Seaboard is largely in between these two systems while a broad ridge begins to break down. It is this reduction in heights coupled with ample mid/late April heating that will ignite isolated to scattered afternoon showers and thunderstorms. Model soundings show rather weak deep layer shear, coupled with ample low-level dry air. Any of the more robust high based storms could yield some damaging winds given evaporational cooling effects. Downdraft CAPE (DCAPE) values average around 600 J/kg which is fairly marginal in terms of downburst potential.
The 00Z HREF 40-dBZ paintball plots depict the main threat area would be east of the Blue Ridge toward the Chesapeake Bay, mainly in the 2-7 PM timeframe. Any additional threat for thunderstorms should largely wane after dark with the loss of diabatic heating. After seeing today`s highs push into the mid 70s to mid 80s, temperatures will come crashing down on Saturday as the frontal zone sags southward.
Overnight conditions will be overcast with low temperatures in the low/mid 50s. By early Saturday morning, the parent front is forecast to be along or just south of I-64. A cool easterly flow will make for a chillier day to the north of this boundary. Rain chances remain plentiful as moisture and lift overrun this quasi-stationary baroclinic zone. For those along/north of I-66 and U.S. 50, mid 50s to mid 60s are expected (coolest over northeastern Maryland). Closer to the I-64 corridor, highs could near 80 degrees although this is dependent on whether the area remains in the warm sector or not...
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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
343 AM EDT Wed Apr 8 2026WHAT HAS CHANGED
Small Craft Advisories have been extended through 8 AM for the Upper/Middle Tidal Potomac, as well as northern portions of the Bay. SCAs remain in effect for the Lower Tidal Potomac and for the Bay to the south of the Bay Bridge through 10 AM.
KEY MESSAGES
- 1) Freeze Warnings remain in effect for the majority of the area early this morning. Freeze Watches remain in effect for many locations tonight.
- 2) Dry frontal passage Saturday with continued moderating trend in temps.
DISCUSSION
KEY MESSAGE 1...Freeze Warnings remain in effect for the majority of the area early this morning. Freeze Watches remain in effect for many locations tonight.
High pressure continues to build to our north across Upstate NY early this morning. Winds remain light out of the northeast in many locations, but temperatures have dropped back into the upper 20s and 30s across the region. Freeze Warnings are in effect through 9 AM for all zones where the growing season is ongoing, except for Calvert and St. Mary`s County.
Sunny skies are forecast for all today, with temperatures climbing into the 50s. Winds will start out northeasterly, but turn more southeasterly over the course of the day. High pressure will build over Southern New England this evening, and then offshore later tonight. A surface ridge will extend southwestward from the high, encompassing much of the Mid- Atlantic. A weaker pressure gradient should allow for more locations to ultimately decouple tonight, but the ambient airmass will be a bit warmer and the dewpoints will be a bit higher. With clear skies and light to calm winds, it will be an ideal setup for radiational cooling tonight. Many locations will once again drop to near or slightly below freezing. Freeze Watches remain in effect for tonight for most of the forecast area where the growing season is ongoing (the exception being the inner DC/Baltimore Metros and southern Maryland). The Freeze Watches will eventually need to be upgraded to Freeze Warnings and Frost Advisories. Final decisions on Freeze Warnings and Frost Advisories for tonight will likely be made later this morning after the current Freeze Warning is allowed to expire.
As high pressure progresses offshore, winds will become southeasterly on Thursday, and then southerly on Friday. The southerly component to the wind will draw warmer air northward into the area, resulting in a warming trend in temperatures. Highs are forecast to reach into the 60s on Thursday, and then 70s on Friday.