Viewing archive of Saturday, 21 October 2017
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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)
Coronal hole faces Earth
A large southern extension of the northern hemisphere polar coronal hole is facing Earth today.
M1.1 solar flare from behind the east limb
A huge surprise last evening as solar activity unexpectedly reached moderate level thanks to an M1.11 (R1-minor) solar flare that took place behind the east limb. The solar flare peaked at 23:28 UTC on 20 October 2017.
Latest news
Monday, 13 May 2024
M6.6 solar flare with earth-directed CME
Sunday, 12 May 2024
Small CME impact, Record visitor amount
Saturday, 11 May 2024
Strongest geomagnetic storm since 2003, X5.8 solar flare
Latest forum messages
Space Weather Memes 356AR3664 865Incoming Active Regions 291May 2024 Geomagnetic Storms from AR 13664 (2) 295Could Cycle 25 be categorized as "historical"? 10
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Space weather facts
| Last X-flare | 2024/05/14 | X1.2 |
| Last M-flare | 2024/05/14 | M2.5 |
| Last geomagnetic storm | 2024/05/13 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 149.2 +12.7 |
| Last 30 days | 177.1 +82.7 |