#ar3664 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ar3664, aggregated by home.social.
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#SpaceWeather news via #SolarHam
Near X-Flare
June 23, 2024 @ 14:50 UTC
"Is our old pal #AR3664 (3697 and now 3723) still active?"Of course it is. A near #XFlare (M9.3) was detected at 13:01 UTC (Jun 23). The flare itself was fairly rapid, so a coronal mass ejection (CME) is likely not associated. We will get a better at the returning flare champion over the next few days.
"Now back for the third time, AR 3664 (3697) is returning into view from off the farside of the Sun. This region was first assigned 3664 on May 1st and would go on to produce non stop X-Flares and the resulting eruptions were responsible for the extreme #geomagnetic storm on May 10-11. It would reappear again on May 28th and was reassigned AR 3697 and would produce additional major solar flares. What will it have in store for us this time around? Stay tuned to find out."
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#SpaceWeather news via #SolarHam
Near X-Flare
June 23, 2024 @ 14:50 UTC
"Is our old pal #AR3664 (3697 and now 3723) still active?"Of course it is. A near #XFlare (M9.3) was detected at 13:01 UTC (Jun 23). The flare itself was fairly rapid, so a coronal mass ejection (CME) is likely not associated. We will get a better at the returning flare champion over the next few days.
"Now back for the third time, AR 3664 (3697) is returning into view from off the farside of the Sun. This region was first assigned 3664 on May 1st and would go on to produce non stop X-Flares and the resulting eruptions were responsible for the extreme #geomagnetic storm on May 10-11. It would reappear again on May 28th and was reassigned AR 3697 and would produce additional major solar flares. What will it have in store for us this time around? Stay tuned to find out."
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Hackaday Links: June 2, 2024 - So you say you missed the Great Solar Storm of 2024 along with its attendant auror... - https://hackaday.com/2024/06/02/hackaday-links-june-2-2024/ #hackadaycolumns #infrastructure #hackadaylinks #spaceweather #thermalpaste #cyberattack #solarstorm #marketing #windowsxp #malware #sunspot #ar3664 #aurora #sewage #water #hype #ai
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Hackaday Links: June 2, 2024 - So you say you missed the Great Solar Storm of 2024 along with its attendant auror... - https://hackaday.com/2024/06/02/hackaday-links-june-2-2024/ #hackadaycolumns #infrastructure #hackadaylinks #spaceweather #thermalpaste #cyberattack #solarstorm #marketing #windowsxp #malware #sunspot #ar3664 #aurora #sewage #water #hype #ai
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No #GeomagneticStorm predicted yet. But with former #AR3664 (now #AR3697) belching out big flares, we might be in for another #Aurora treat soon...
#SpaceWeaherUpdate via #SolarHam
#XFlares Are Piling Up
June 1, 2024 @ 10:20 UTC"Good morning. How about another X-Flare!
"The latest event measuring X1.4 was just detected around AR 3697 (3664) at 08:48 UTC (Jun 1). Much like the X-Flare yesterday evening, a CME does not appear to be associated with this event. Some dimming was observed to the north of 3697 before this event, but coronagraph imagery does not seem to reveal any plasma leaving the Sun. The flare producing machine is now in a good location for potential Earth directed eruptions.
"And with this now being the 49th X-Flare of the current solar cycle, we have tied the X-Flare total from the previous solar cycle 24. When will #50 take place? Stay tuned to find out."
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No #GeomagneticStorm predicted yet. But with former #AR3664 (now #AR3697) belching out big flares, we might be in for another #Aurora treat soon...
#SpaceWeaherUpdate via #SolarHam
#XFlares Are Piling Up
June 1, 2024 @ 10:20 UTC"Good morning. How about another X-Flare!
"The latest event measuring X1.4 was just detected around AR 3697 (3664) at 08:48 UTC (Jun 1). Much like the X-Flare yesterday evening, a CME does not appear to be associated with this event. Some dimming was observed to the north of 3697 before this event, but coronagraph imagery does not seem to reveal any plasma leaving the Sun. The flare producing machine is now in a good location for potential Earth directed eruptions.
"And with this now being the 49th X-Flare of the current solar cycle, we have tied the X-Flare total from the previous solar cycle 24. When will #50 take place? Stay tuned to find out."
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#SpaceWeather update via #SolarHam
"So is old region #AR3664 still active? Of course it is!
"An X2.9 solar flare was observed around the returning region at 07:08 UTC (May 27, 2024). The event is also responsible for an energetic coronal mass ejection (#CME) now emerging in updated coronagraph imagery. Because the sunspot region is still located behind the east limb, the flare itself was likely stronger than the X2.9 measurement. The CME itself should be directed away from our planet. We may see some busy days ahead of us. Stay tuned!"
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#SpaceWeather update via #SolarHam
"So is old region #AR3664 still active? Of course it is!
"An X2.9 solar flare was observed around the returning region at 07:08 UTC (May 27, 2024). The event is also responsible for an energetic coronal mass ejection (#CME) now emerging in updated coronagraph imagery. Because the sunspot region is still located behind the east limb, the flare itself was likely stronger than the X2.9 measurement. The CME itself should be directed away from our planet. We may see some busy days ahead of us. Stay tuned!"
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Estimated X12 #SolarFlare from [presumed] #AR3664, which is on the far side of the Sun right now.
#CarringtonEvent was believed to be X45.
#AR3664 will be Earth-facing again soon.
"A fast moving, full halo coronal mass ejection (CME) is seen leaving the Sun this morning beginning around 05:30 UTC (May 20). Based on updated imagery, this event occurred on the farside of the Sun and is not Earth directed. Perhaps our old friend AR 3664 is up to its old tricks again. We should begin to see the big sunspot region turn back into view early next week."
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Estimated X12 #SolarFlare from [presumed] #AR3664, which is on the far side of the Sun right now.
#CarringtonEvent was believed to be X45.
#AR3664 will be Earth-facing again soon.
"A fast moving, full halo coronal mass ejection (CME) is seen leaving the Sun this morning beginning around 05:30 UTC (May 20). Based on updated imagery, this event occurred on the farside of the Sun and is not Earth directed. Perhaps our old friend AR 3664 is up to its old tricks again. We should begin to see the big sunspot region turn back into view early next week."
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Tiens, la dernière grosse tempête solaire a un article Wikipédia en 21 langues, mais pas en français https://en.wikipedia.org/wiki/May_2024_solar_storms
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Tiens, la dernière grosse tempête solaire a un article Wikipédia en 21 langues, mais pas en français https://en.wikipedia.org/wiki/May_2024_solar_storms
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Aurora Banks Peninsula - L'image d'astronomie du jour - 17/05/2024
Vue plein sud depuis la péninsule de Banks, près de Christchurch sur l'île du Sud de la Nouvelle-Zélande. La base d'une tour rocheuse est visible au premier plan, avec les étoiles de la Croix du Sud en haut du cadre et le pôle céleste sud de la Terre près du centre...
Image Crédit & Copyright : Kavan Chay
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#AR3664 is one big sunspot group and active region.
Pictured, a large multi-pronged solar prominence was captured extending from chaotic sunspot region AR 3664 out into space, just one example of the particle clouds ejected from this violent solar region.
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#AR3664 is one big sunspot group and active region.
Pictured, a large multi-pronged solar prominence was captured extending from chaotic sunspot region AR 3664 out into space, just one example of the particle clouds ejected from this violent solar region.
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#AR3664 at the #Sun's Edge
#Astronomy #Picture of the Day -
#AR3664 at the #Sun's Edge
#Astronomy #Picture of the Day -
The latest #Spaceweather update from Spaceweather.com
"Because the sunspot is behind the edge of the solar disk, the flare was partially #eclipsed. It was probably even stronger than it appeared. 'X8.7' is almost certainly an underestimate of the flare's true strength.
"Extreme ultraviolet radiation from the flare ionized the top of Earth's atmosphere, causing a deep shortwave #RadioBlackout over the Americas. Ham radio operators, aviators and mariners may have noticed a sudden loss of signal at all frequencies below 30 MHz.
"Subatomic debris from this event might soon reach Earth, guided toward our planet by the #ParkerSpiral. Also, a #CME might be in the offing. Stay tuned for updates!
"EARTH IS CONNECTED TO SUNSPOT AR3664: Giant sunspot AR3664 is no longer facing Earth. That makes it extra dangerous. The #Carrington-class sunspot is passing over the sun's western limb--a region of the sun that is magnetically connected to our planet. Indeed, we are feeling the effects of that connection right now.
"What's causing this? Protons accelerated by solar flares in the magnetic canopy of #AR3664 are following the #ParkerSpiral back to Earth. Think of it as a magnetic superhighway. The arriving particles are funneled by our planet's magnetic field toward the poles where they ionize the atmosphere and interfere with the normal transmission of shortwave radio."
https://spaceweather.com/repeat_images/parkerspiral2.png
https://spaceweather.com/images2024/14may24/teal/20240514_165546_1024_0131.jpg
#SolarFlare #SpaceWx #AmateurRadio #SolarCycle25 #SolarFlares #Geomagneticstorm #HamRadio #Blackout
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The latest #Spaceweather update from Spaceweather.com
"Because the sunspot is behind the edge of the solar disk, the flare was partially #eclipsed. It was probably even stronger than it appeared. 'X8.7' is almost certainly an underestimate of the flare's true strength.
"Extreme ultraviolet radiation from the flare ionized the top of Earth's atmosphere, causing a deep shortwave #RadioBlackout over the Americas. Ham radio operators, aviators and mariners may have noticed a sudden loss of signal at all frequencies below 30 MHz.
"Subatomic debris from this event might soon reach Earth, guided toward our planet by the #ParkerSpiral. Also, a #CME might be in the offing. Stay tuned for updates!
"EARTH IS CONNECTED TO SUNSPOT AR3664: Giant sunspot AR3664 is no longer facing Earth. That makes it extra dangerous. The #Carrington-class sunspot is passing over the sun's western limb--a region of the sun that is magnetically connected to our planet. Indeed, we are feeling the effects of that connection right now.
"What's causing this? Protons accelerated by solar flares in the magnetic canopy of #AR3664 are following the #ParkerSpiral back to Earth. Think of it as a magnetic superhighway. The arriving particles are funneled by our planet's magnetic field toward the poles where they ionize the atmosphere and interfere with the normal transmission of shortwave radio."
https://spaceweather.com/repeat_images/parkerspiral2.png
https://spaceweather.com/images2024/14may24/teal/20240514_165546_1024_0131.jpg
#SolarFlare #SpaceWx #AmateurRadio #SolarCycle25 #SolarFlares #Geomagneticstorm #HamRadio #Blackout
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#SolarHam #Spaceweather Update:
Largest #SolarFlare Of #SolarCycle25 Observed
May 14, 2024 @ 17:05 UTC (UPDATED)
"The largest solar flare of the current solar cycle 25, and largest since 2017 was just observed around deparing #AR3664 off the west limb. The #X8.7 event peaked at 16:51 UTC (May 14) causing a strong R3 level radio blackout directly over North America. More to follow.
"And Then...
"An eruption in the vicinity of newly assigned #AR3682 measuring M4.4 was observed at 17:38 UTC (May 14). This event looks to be eruptive, meaning a #CME will be produced.
"Solar Cycle 25 just kicked it up a notch!"
#AmateurRadio #CMEs #SolarFlares #ParkerSpiral? #XClassFlares #SpaceWx
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#SolarHam #Spaceweather Update:
Largest #SolarFlare Of #SolarCycle25 Observed
May 14, 2024 @ 17:05 UTC (UPDATED)
"The largest solar flare of the current solar cycle 25, and largest since 2017 was just observed around deparing #AR3664 off the west limb. The #X8.7 event peaked at 16:51 UTC (May 14) causing a strong R3 level radio blackout directly over North America. More to follow.
"And Then...
"An eruption in the vicinity of newly assigned #AR3682 measuring M4.4 was observed at 17:38 UTC (May 14). This event looks to be eruptive, meaning a #CME will be produced.
"Solar Cycle 25 just kicked it up a notch!"
#AmateurRadio #CMEs #SolarFlares #ParkerSpiral? #XClassFlares #SpaceWx
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I just saw that there was an #XClass #SolarFlare (X8.79?). Not sure where it originated from. If it's #AR3664, we could be in for a #ParkerSpiral event. More soon...
#SolarCycle25 #SolarFlares -
I just saw that there was an #XClass #SolarFlare (X8.79?). Not sure where it originated from. If it's #AR3664, we could be in for a #ParkerSpiral event. More soon...
#SolarCycle25 #SolarFlares -
I was asked when the best times are for viewing #aurora #Polarlicht so I plotted some statistics for the time of day in 3-hour windows, and their number of events with a strength of about kp7 and over, since 1870.
It's quite funny really but the time slots 6pm to midnight are the slots with the most events. 👀 🤔
I think #nuclear explosions can trigger "my" measurements. And depending on which time zone an explosion occurs in, there might be a bias toward Kazachstan's or USA nine-to-five office hours. So I removed all kp7 events on the day of an explosion and 3 days after.
(data for nuke tests from USGS earth quake monitoring and this blog https://www.johnstonsarchive.net/nuclear/tests/index.html )But the odd time slot feature persists! 👀
Anyway: in case the huge sunspot #AR3664 that caused the magnificent skies comes around again in 2 weeks, the Northern Hemisphere has little chance to catch an aurora due to late sunsets and few events after dark in May (and full moon, too).
cc @iangriffin 🙂
#ClearSkies -
Ich hab mal bisschen amateurhaft (sorry 🙈) die Sonnenbilder der letzten Tage (seit dem 08.05. bis heute) zu einem GIF zusammengemurkst. Da ist mit etwas Fantasie drauf zu sehen, wie der #Sonnenfleck #AR3664 über die Sonnenoberfläche 'schwimmt', ohne einem wirklichen rotatorischen Muster zu folgen, wie man es sonst von Himmelskörpern erwarten würde.
Der Sonnenfleck war letztes Wochenende für die vielen #Polarlicht-Sichtungen verantwortlich.#Sonne
#Sonnenbeobachtung
#Teleskop
#Teleskopie
#BlickNachOben
#AmateurAstronomie -
#AR3664 on a Setting #Sun
#Astronomy #Picture of the Day -
#AR3664 on a Setting #Sun
#Astronomy #Picture of the Day -
#SolarHam summary of the #auroras
MAY The 3664th
May 13, 2024 @ 00:45 UTC
"I just want to say thank you for your support the past few days. I did not get much sleep as SolarHam is a one person operation, however the Extreme #GeomagneticStorm generated a record number of visitors to the website. I appreciate everybody who continues to follow SolarHam on both the main website and on social media. Hard to believe I have been doing this now for over 18 years!
"I would like to share with you an article I wrote detailing the extreme geomagnetic storm titled 'May the 3664th'. I compiled data and imagery, all in chronological order to show how the events unfolded. I also added a small fraction of the aurora imagery that was submitted so far. Thanks again!"
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#SolarHam summary of the #auroras
MAY The 3664th
May 13, 2024 @ 00:45 UTC
"I just want to say thank you for your support the past few days. I did not get much sleep as SolarHam is a one person operation, however the Extreme #GeomagneticStorm generated a record number of visitors to the website. I appreciate everybody who continues to follow SolarHam on both the main website and on social media. Hard to believe I have been doing this now for over 18 years!
"I would like to share with you an article I wrote detailing the extreme geomagnetic storm titled 'May the 3664th'. I compiled data and imagery, all in chronological order to show how the events unfolded. I also added a small fraction of the aurora imagery that was submitted so far. Thanks again!"
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So, even though #AR3664 is no longer #EarthFacing, we may not be out of the woods yet...
via #SpaceWeather . com
"CMEs emitted by the departing sunspot [#AR3664] are no longer flying toward Earth. At most only glancing blows are likely from eruptions on May 12th through 14th.
"The danger could return on May 15th, however. On that date the sunspot will pass through a region of the sun magnetically connected to Earth via the #ParkerSpiral. Subatomic debris (protons and electrons) from explosions on May 15th and 16th could spiral back to Earth and rain down our planet. This is called a 'radiation storm;' it can upset #satellite #electronics and cause polar #RadioBlackouts. "
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So, even though #AR3664 is no longer #EarthFacing, we may not be out of the woods yet...
via #SpaceWeather . com
"CMEs emitted by the departing sunspot [#AR3664] are no longer flying toward Earth. At most only glancing blows are likely from eruptions on May 12th through 14th.
"The danger could return on May 15th, however. On that date the sunspot will pass through a region of the sun magnetically connected to Earth via the #ParkerSpiral. Subatomic debris (protons and electrons) from explosions on May 15th and 16th could spiral back to Earth and rain down our planet. This is called a 'radiation storm;' it can upset #satellite #electronics and cause polar #RadioBlackouts. "
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#astronomie je crois qu'on tiens un suspect pour les #auroresboreales d'hier c'est le groupe de taches #AR3664 qui est en train de s'enfuir sur la face cachée du soleil !
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I guess the #NationalScienceFoundation must be one of those prepper cultists groups... Oh, and there's another potential active area (known as a #SolarPlage) about to become Earth-facing. I noticed that on the latest #SolarHam image. The plage will more than likely become #AR3673. Will it be as large and active as #AR3664?
Scientists Developed New Model to Predict #Sunspot and #Plage Coverage for #SolarCycle25
"#SolarFlares and coronal mass ejections (#CMEs) are eruptive events that impact #satellites, communication networks, electric power grids, and technological infrastructures."
https://nso.edu/blog/new-model-to-predict-sunspot-and-plage-coverage-for-solar-cycle-25/
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I guess the #NationalScienceFoundation must be one of those prepper cultists groups... Oh, and there's another potential active area (known as a #SolarPlage) about to become Earth-facing. I noticed that on the latest #SolarHam image. The plage will more than likely become #AR3673. Will it be as large and active as #AR3664?
Scientists Developed New Model to Predict #Sunspot and #Plage Coverage for #SolarCycle25
"#SolarFlares and coronal mass ejections (#CMEs) are eruptive events that impact #satellites, communication networks, electric power grids, and technological infrastructures."
https://nso.edu/blog/new-model-to-predict-sunspot-and-plage-coverage-for-solar-cycle-25/
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#SpaceWeather update from Spaceweather.com
ARE WE ABOUT TO EXPERIENCE A NEW CARRINGTON EVENT?
"No. #AR3664 is indeed a '#Carrington-class' sunspot, but the #CMEs it hurled toward Earth over the past few days are not as potent as the monster CME of Sept. 1, 1859. NOAA says we might experience a severe geomagnetic storm when the CMEs arrive this weekend. If geomagnetic storms were hurricanes, 'severe' would be category 4. The Carrington Event was category 5 or greater. So this is no #CarringtonEvent. Even so, category 4 is pretty intense--if it happens.
"FIVE CMEs ARE HEADING FOR EARTH: Great sunspot AR3664 has hurled an astonishing five CMEs toward Earth.
"According to a NOAA forecast model, the first three CMEs could merge for form a 'Cannibal CME.' Cannibal CMEs form when fast-moving CMEs overtake and gobble up slower CMEs in front of them. Internal shock waves created by such CME collisions do an good job sparking geomagnetic storms when they strike Earth's magnetic field.
"The #CannibalCME is expected to arrive on May 11th. It alone could spark a strong (G3) #GeomagneticStorm. With two more CMEs following close behind, storm levels could become extreme (G4), sparking auroras at mid- to low-latitudes across Europe and the USA."
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#SpaceWeather update from Spaceweather.com
ARE WE ABOUT TO EXPERIENCE A NEW CARRINGTON EVENT?
"No. #AR3664 is indeed a '#Carrington-class' sunspot, but the #CMEs it hurled toward Earth over the past few days are not as potent as the monster CME of Sept. 1, 1859. NOAA says we might experience a severe geomagnetic storm when the CMEs arrive this weekend. If geomagnetic storms were hurricanes, 'severe' would be category 4. The Carrington Event was category 5 or greater. So this is no #CarringtonEvent. Even so, category 4 is pretty intense--if it happens.
"FIVE CMEs ARE HEADING FOR EARTH: Great sunspot AR3664 has hurled an astonishing five CMEs toward Earth.
"According to a NOAA forecast model, the first three CMEs could merge for form a 'Cannibal CME.' Cannibal CMEs form when fast-moving CMEs overtake and gobble up slower CMEs in front of them. Internal shock waves created by such CME collisions do an good job sparking geomagnetic storms when they strike Earth's magnetic field.
"The #CannibalCME is expected to arrive on May 11th. It alone could spark a strong (G3) #GeomagneticStorm. With two more CMEs following close behind, storm levels could become extreme (G4), sparking auroras at mid- to low-latitudes across Europe and the USA."
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Something wicked this way comes?
Even though #AR3664 is almost out of view, it looks like something big is about to take its place! Yikes! (I think the new area will be designated AR3673, but I'm not 100% certain of that).
https://www.solarham.com/aia131.htm
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Something wicked this way comes?
Even though #AR3664 is almost out of view, it looks like something big is about to take its place! Yikes! (I think the new area will be designated AR3673, but I'm not 100% certain of that).
https://www.solarham.com/aia131.htm
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#SpaceWeather update via #Solarham
X3.9 Solar Flare / Radiation Storm
May 10, 2024 @ 08:50 UTC (UPDATED)
"The largest #SolarFlare yet produced by #AR3664 was just observed at 06:54 UTC. This X3.9 blast is associated with a Type II radio emission with an estimated velocity of 1248 km/s, along with a 10cm radio burst (TenFlare) measuring 900 SFU and lasting 16 minutes. A coronal mass ejection (CME) is now becoming visible and it appears the main bulk is heading to the west, but there will likely still be an Earth directed component. More to follow.
"Radiation Storm: The minor (S1) radiation storm threshold was reached at 13:35 UTC (May 10). This is possibly related to X3.9 flare this morning, or can also be due to a combination of all previous eruptions nearing Earth."
https://www.youtube.com/watch?si=I-yE941q5QHyl_rg&v=GRzeDwFzX1A&feature=youtu.be
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#SpaceWeather update via #Solarham
X3.9 Solar Flare / Radiation Storm
May 10, 2024 @ 08:50 UTC (UPDATED)
"The largest #SolarFlare yet produced by #AR3664 was just observed at 06:54 UTC. This X3.9 blast is associated with a Type II radio emission with an estimated velocity of 1248 km/s, along with a 10cm radio burst (TenFlare) measuring 900 SFU and lasting 16 minutes. A coronal mass ejection (CME) is now becoming visible and it appears the main bulk is heading to the west, but there will likely still be an Earth directed component. More to follow.
"Radiation Storm: The minor (S1) radiation storm threshold was reached at 13:35 UTC (May 10). This is possibly related to X3.9 flare this morning, or can also be due to a combination of all previous eruptions nearing Earth."
https://www.youtube.com/watch?si=I-yE941q5QHyl_rg&v=GRzeDwFzX1A&feature=youtu.be
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#SolarFlares, #Spaceweather via Spaceweather.com And there's a reason I held onto my eclipse glasses. Read on...
"THIS SUNSPOT IS HUGE: Sunspot #AR3664 has grown so large, it is now visually rivaling the great #Carrington sunspot of Sept. 1859. To illustrate their similarity, Carrington's famous sketch (to scale) has been added to a picture of today's sun:
"How big is AR3664? Sprawling almost 200,000 km from end to end, it is 15 times wider than Earth. You can see AR3664 through ordinary eclipse glasses with no magnification at all. Moreover, it is easy to project an image of this sunspot onto the sidewalk or a white screen just as Carrington did in the 19th century.
"Carrington's sunspot is famous because in August and Sept. 1859 it emitted a series of intense #SolarFlares and #CMEs. The resulting #geomagnetic storms set fire to telegraph offices and sparked auroras from Cuba to Hawaii. The '#CarringtonEvent' has since become a touchstone of space weather in pop culture, with headlines stoking fears of an "internet apocalypse" if it repeats. Recent studies suggest that Carrington-class storms occur once every 40 to 60 years, so we're overdue.
"Does this mean we're about to get hit by another Carrington Event? Probably not. Big sunspots don't always produce big CMEs. Indeed, the CME AR3664 hurled toward us earlier today is puny compared to the CMEs of 1859. It won't cause much trouble when it arrives this weekend. Nevertheless, it would be wise to keep an eye on this growing active region while Earth is in its strike zone."
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#SolarFlares, #Spaceweather via Spaceweather.com And there's a reason I held onto my eclipse glasses. Read on...
"THIS SUNSPOT IS HUGE: Sunspot #AR3664 has grown so large, it is now visually rivaling the great #Carrington sunspot of Sept. 1859. To illustrate their similarity, Carrington's famous sketch (to scale) has been added to a picture of today's sun:
"How big is AR3664? Sprawling almost 200,000 km from end to end, it is 15 times wider than Earth. You can see AR3664 through ordinary eclipse glasses with no magnification at all. Moreover, it is easy to project an image of this sunspot onto the sidewalk or a white screen just as Carrington did in the 19th century.
"Carrington's sunspot is famous because in August and Sept. 1859 it emitted a series of intense #SolarFlares and #CMEs. The resulting #geomagnetic storms set fire to telegraph offices and sparked auroras from Cuba to Hawaii. The '#CarringtonEvent' has since become a touchstone of space weather in pop culture, with headlines stoking fears of an "internet apocalypse" if it repeats. Recent studies suggest that Carrington-class storms occur once every 40 to 60 years, so we're overdue.
"Does this mean we're about to get hit by another Carrington Event? Probably not. Big sunspots don't always produce big CMEs. Indeed, the CME AR3664 hurled toward us earlier today is puny compared to the CMEs of 1859. It won't cause much trouble when it arrives this weekend. Nevertheless, it would be wise to keep an eye on this growing active region while Earth is in its strike zone."
