Sunspot region AR10664
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/08/21 | 9 | 30 | DAO | S11E40 | |
| 2004/08/22 | 19 | 90 | DAO | S10E25 | |
| 2004/08/23 | 22 | 100 | DAO | S10E12 | |
| 2004/08/24 | 17 | 120 | ESO | S11W03 | |
| 2004/08/25 | 17 | 140 | ESO | S11W16 | |
| 2004/08/26 | 11 | 110 | ESO | S11W29 | |
| 2004/08/27 | 8 | 120 | DAO | S11W42 | |
| 2004/08/28 | 1 | 90 | HSX | S11W58 | |
| 2004/08/29 | 1 | 90 | HSX | S11W73 | |
| 2004/08/30 | 1 | 60 | HSX | S11W85 |
| B |
|---|
| 4 |
The top 4 solar flares from sunspot region 10664
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B6.59 | 2004/08/29 | 07:55 | 08:03 | 08:10 | |
| 2 | B4.94 | 2004/08/22 | 22:15 | 22:19 | 22:21 | |
| 3 | B2.68 | 2004/08/27 | 15:04 | 15:06 | 15:07 | |
| 4 | B2.34 | 2004/08/29 | 00:59 | 01:04 | 01:08 |
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
Space Weather Memes 793Feb 8-9 CMEs 24AR4374 9Do the high-resolution sunspot counts point to more complex sunspots? 59AR4366 1007
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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 | 135.3 +22.7 |
| Last 30 days | 129.4 +28.1 |