Viewing archive of Friday, 21 August 2015
Select the desired archive item
Bulletin on solar and geomagnetic activity Solar activity report
Geophysical report
Sunspot regions
Coronal holes
Kp values
Solar flares
Radiation storms
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
Sunspot region 2403, M-class solar flares
Solar activity is at moderate levels for the first time since 2015/07/06. Sunspot region 2403 erupted with an M1.2 solar flare today that peaked at 02:18 UTC. Another M-class solar flare took place at 09:48 UTC and again came from sunspot region 2403. This second M-class solar flare peaked at the M1.4 class.
Latest news
Wednesday, 14 May 2025
Another X-flare! Potent sunspot region 4087!
Tuesday, 13 May 2025
X1.1 solar flare from sunspot region 4086
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Latest forum messages
Unspecified geomagnetic activity 2431AR4087 174AR 14089 4Tuesday's Filament makes the news in the UK 3AR4990 1
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/15 | M2.1 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 71.5 -69.1 |
| Last 30 days | 98.1 -22.6 |