Sunspot region AR8428
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/01/03 | 2 | 10 | BXO | N23W15 | |
| 1999/01/04 | 2 | 10 | BXO | N24W26 | |
| 1999/01/05 | 1 | 10 | AXX | N22W35 | |
| 1999/01/06 | 7 | 50 | CAO | N22W48 | |
| 1999/01/07 | 2 | 10 | AXX | N21W62 | |
| 1999/01/08 | 1 | 10 | AXX | N22W78 |
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
AR4366 1014Feb 8-9 CMEs 25AR4374 11Space Weather Memes 793Do the high-resolution sunspot counts point to more complex sunspots? 59
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/09 | M2.8 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 132.1 +19.5 |
| Last 30 days | 128.6 +27.4 |