#solarcycle25 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #solarcycle25, aggregated by home.social.
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From #SolarHam - Progression of new #Sunspot #AR4366 (not yet Earth-facing, but will be soon):
"Sunspot Watch
January 31, 2026 @ 04:15 UTC
Newly assigned sunspot region 4366 continues to gradually develop as it turns into view in the northeast quadrant. It is currently producing minor C-Class flares and it is likely now a threat for a moderate M-Flare. Something to keep an eye on this weekend. Image by SDO/HMI.Growing Flare Threat
January 31, 2026 @ 14:50 UTC
AR 4366 continued to expand over the past 12 hours in both size and magnetic complexity. The region has a Beta-Delta magnetic configuration and is producing frequent mid level minor C-Flares. A moderate M-Flare will remain possible on Saturday.M6.6 Solar Flare
February 1, 2026 @ 10:40 UTC
Solar activity increases even further with an M6.6 solar flare peaking at 10:02 UTC (Feb 1). The source, AR 4366, is magnetically complex and is now a threat for an isolated X-Flare. Image below by SDO/AIA.High Solar Activity
February 1, 2026 @ 16:50 UTC (UPDATED)
What a difference a few days make on the Sun. Active sunspot region 4366 turned into a firecracker on Sunday with at least fifteen M-Class solar flares and one X-Flare (so far). Despite the brightness of these events, the mechanics have so far failed to launch any noteworthy coronal mass ejections into space and towards our planet. That could change over the next few days as the region continues to develop and currently sports a Beta-Gamma-Delta magnetic configuration. More solar flares including another X-Flare will remain possible.[And today...]
Impulsive X8.1 Solar Flare
February 2, 2026 @ 00:10 UTC
An impulsive X8.1 solar flare was just detected peaking at 23:57 UTC (Feb 1). This is the second strongest flare in terms of peak X-Ray flux of the current solar cycle. Although a bright flare, new imagery suggests that if a CME is associated, it will likely be fairly mild. Stay tuned to SolarHam where you will get the most up to date and accurate information regarding this space weather event."#SolarFlares #SolarCycle25 #KesslerEffect #KesslerSyndrome #XClassFlares
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Yup. I was right. It was AR3514, now AR3536. Batten down the hatches!
Spaceweather:
MAJOR X-CLASS SOLAR FLARE: Mere hours after emerging over the sun's eastern limb on Dec. 31st, big sunspot AR3536 erupted, producing a major X5-class solar flare. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash.
Radiation from the flare has caused a deep shortwave radio blackout over the Pacific Ocean: blackout map. #HamRadio operators may notice loss of signal at all frequencies below 30 MHz for more than 60 minutes after the flare's peak (2155 UT).
It's too soon to know for sure, but this explosion probably launched a coronal mass ejection (CME) into space. Because the blast site is located near the extreme eastern edge of the sun, the CME is unlikely to have an Earth-directed component, but stay tuned. Solar flare alerts: SMS Text
Update: This explosion caused a #SolarTsunami. You can see the shock wave in this animation from NASA's Solar Dynamics Observatory.
This is the strongest flare of #SolarCycle25 (so far) and the most powerful eruption the sun has produced since the great storms of Sept. 2017.