Viewing archive of Tuesday, 21 April 2020
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Solar activity
Auroral activity
Kp values
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
Aurora Observations
G1 geomagnetic storm, Coronal hole faces Earth
Some unexpected action yesterday! The minor G1 geomagnetic storm threshold was reached on two occasions yesterday (10:44 UTC and 14:18 UTC) and a coronal hole faced our planet! Where did this mysterious geomagnetic storm come from and what can we expect from the earth-facing coronal hole? Keep on reading to find out.
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
Planet-moon interactions and space weather 5AR4415 7New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 76Incoming & Unnumbered Active Regions 268AR4416 13
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/09 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 101.7 +15.8 |
| Last 30 days | 97.2 +38.9 |
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