Sunspot region AR10306
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2003/03/08 | 1 | 280 | HHX | N05E76 | |
| 2003/03/09 | 1 | 470 | HHX | N05E63 | |
| 2003/03/10 | 7 | 540 | DKO | N05E47 | |
| 2003/03/11 | 8 | 510 | CKO | N05E34 | |
| 2003/03/12 | 6 | 520 | DKO | N05E21 | |
| 2003/03/13 | 8 | 590 | DKO | N06E08 | |
| 2003/03/14 | 15 | 570 | CKO | N07W05 | |
| 2003/03/15 | 16 | 580 | DKO | N07W19 | |
| 2003/03/16 | 15 | 640 | DKO | N07W33 | |
| 2003/03/17 | 12 | 630 | DKO | N08W45 | |
| 2003/03/18 | 8 | 600 | DKO | N06W60 | |
| 2003/03/19 | 3 | 460 | DKO | N07W72 | |
| 2003/03/20 | 3 | 260 | CKO | N08W88 |
| B | C |
|---|---|
| 3 | 5 |
The top 8 solar flares from sunspot region 10306
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.74 | 2003/03/08 | 09:25 | 09:57 | 10:14 | |
| 2 | C1.93 | 2003/03/10 | 10:01 | 10:05 | 10:09 | |
| 3 | C1.31 | 2003/03/10 | 08:42 | 08:53 | 09:10 | |
| 4 | C1.21 | 2003/03/12 | 16:43 | 16:52 | 16:56 | |
| 5 | C1.12 | 2003/03/09 | 02:02 | 02:06 | 02:09 | |
| 6 | B9.19 | 2003/03/09 | 03:42 | 03:45 | 03:47 | |
| 7 | B8.74 | 2003/03/12 | 09:37 | 09:40 | 09:43 | |
| 8 | B8.09 | 2003/03/12 | 21:14 | 21:17 | 21:26 |
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
AR4374 7Do the high-resolution sunspot counts point to more complex sunspots? 59Feb 8-9 CMEs 23AR4366 1007AR4362 23
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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 | 127.2 +23.7 |