Sunspot region AR10644
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/07/11 | 1 | 100 | HSX | N11E69 | |
| 2004/07/12 | 1 | 140 | HAX | N12E58 | |
| 2004/07/13 | 7 | 110 | DSO | N11E44 | |
| 2004/07/14 | 10 | 120 | DAO | N11E30 | |
| 2004/07/15 | 9 | 130 | DSO | N11E17 | |
| 2004/07/16 | 4 | 120 | CSO | N12E04 | |
| 2004/07/17 | 5 | 160 | HSX | N13W07 | |
| 2004/07/18 | 8 | 150 | DSO | N13W20 | |
| 2004/07/19 | 6 | 110 | CSO | N13W33 | |
| 2004/07/20 | 5 | 150 | CSO | N13W46 | |
| 2004/07/21 | 1 | 100 | HRX | N13W61 | |
| 2004/07/22 | 2 | 90 | HSX | N12W73 | |
| 2004/07/23 | 1 | 60 | HSX | N11W88 |
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
AR4392 (including CMEs) 80Current Farside Activity 417Comet C/2026 A1 (MAPS) for the southern hemisphere 18Growth of Cycle 25 985Incoming & Unnumbered Active Regions 223
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/14 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 82.4 +4.2 |
| Last 30 days | 61.1 -58.1 |