Sunspot region AR10991
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2008/04/20 | 3 | 20 | BXO | S09E29 | |
| 2008/04/21 | 2 | 20 | AXX | S10E15 |
Latest news
Thursday, 4 June 2026
G3 geomagnetic storm watch for 4 and 5 June
Wednesday, 13 May 2026
Coronal hole faces Earth
Monday, 30 March 2026
X1.5 solar flare
Latest forum messages
Incoming & Unnumbered Active Regions 518X alerts currently not available 7AR4473 (featuring AR4475) 39Coronal holes 132Coronal Hole 70 4
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Space weather facts
| Last X-flare | 2026/06/03 | X1.0 |
| Last M-flare | 2026/06/21 | M6.9 |
| Last geomagnetic storm | 2026/06/11 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| May 2026 | 101.4 +22.1 |
| June 2026 | 97.9 -3.5 |
| Last 30 days | 107.9 +10.3 |
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