Sunspot region AR11673
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/02/16 | 1 | 40 | HSX | S11E67 | |
| 2013/02/17 | 11 | 100 | CSO | S10E56 | |
| 2013/02/18 | 5 | 70 | CAO | S10E43 | |
| 2013/02/19 | 8 | 60 | CAO | S09E31 | |
| 2013/02/20 | 24 | 90 | DAC | S11E17 | |
| 2013/02/21 | 16 | 80 | CAO | S11E04 | |
| 2013/02/22 | 10 | 10 | BXO | S11W10 | |
| 2013/02/23 | 9 | 10 | BXO | S10W23 | |
| 2013/02/24 | 9 | 10 | BXO | S10W36 |
| B | C |
|---|---|
| 3 | 1 |
The top 4 solar flares from sunspot region 11673
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.39 | 2013/02/24 | 20:14 | 20:20 | 20:33 | |
| 2 | B9.56 | 2013/02/26 | 14:42 | 14:54 | 15:05 | |
| 3 | B6.51 | 2013/02/15 | 15:36 | 15:39 | 15:42 | |
| 4 | B5.5 | 2013/02/18 | 04:23 | 04:27 | 04:29 |
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 1015AR4374 12Feb 8-9 CMEs 25Space 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 |