Viewing archive of Monday, 1 December 2025

Select the desired archive item

Reports
Solar activity
Auroral activity
X1.9 solar flare, Coronal hole faces Earth

Welcome to December! New month, new solar activity! Sunspot region 4274 took center stage at the beginning of November with numerous X-class events and some gorgeous coronal mass ejections, some of which arrived at Earth and caused severe G4 geomagnetic storm conditions. However she is not done yet. This sunspot region survived its trip around the far side of the Sun and she is flaring again at the start of December but with a new number: 4299. This morning ex-4274 announced her return with an X1.9 (R3-strong) solar flare that peaked at 02:49 UTC!

Read more

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!

No Ads on SWL Pro!
No Ads on SWL Pro! Subscriptions
Donations
Support SpaceWeatherLive.com! Donate
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2026/02/04X4.3
Last M-flare2026/02/05M1.8
Last geomagnetic storm2026/01/28Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2025124 +32.2
February 2026141.3 +17.3
Last 30 days123.1 +14.7

This day in history*

Solar flares
12000X1.74
22026M2.7
32025M2.7
42026M2.5
52024M2.1
DstG
11983-183G4
21961-140G2
31982-111G2
41957-87G2
52002-82G1
*since 1994

Social networks