Sunspot region AR13387
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/07/27 | 2 | 60 | HAX | N18E66 | |
| 2023/07/28 | 4 | 120 | CAO | N20E52 | |
| 2023/07/29 | 5 | 120 | CAO | N20E40 | |
| 2023/07/30 | 5 | 120 | CSO | N20E29 | |
| 2023/07/31 | 9 | 110 | CSO | N21E16 | |
| 2023/08/01 | 6 | 50 | CSO | N23E02 | |
| 2023/08/02 | 4 | 60 | CSO | N21W10 | |
| 2023/08/03 | 5 | 50 | CSO | N21W22 | |
| 2023/08/04 | 3 | 50 | CSO | N22W36 | |
| 2023/08/05 | 4 | 80 | DSO | N22W49 | |
| 2023/08/06 | 8 | 140 | DSI | N21W62 | |
| 2023/08/07 | 3 | 80 | DSI | N19W75 | |
| 2023/08/08 | 4 | 90 | DSO | N18W87 | |
| 2023/08/09 | 4 | 90 | DSO | N18W0* |
2023/07/27
2023/07/28
2023/07/29
2023/07/30
2023/07/31
2023/08/01
2023/08/02
2023/08/03
2023/08/04
2023/08/05
2023/08/06
2023/08/07
2023/08/08
2023/08/09
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2023/07/27
2023/07/28
2023/07/29
2023/07/30
2023/07/31
2023/08/01
2023/08/02
2023/08/03
2023/08/04
2023/08/05
2023/08/06
2023/08/07
2023/08/08
2023/08/09
|
| C | M |
|---|---|
| 20 | 5 |
The top 10 solar flares from sunspot region 13387
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.6 | 2023/08/08 | 09:20 | 09:31 | 09:41 | |
| 2 | M1.4 | 2023/08/07 | 19:37 | 19:51 | 19:58 | |
| 3 | M1.06 | 2023/08/07 | 15:30 | 16:27 | 16:36 | |
| 4 | M1.06 | 2023/08/07 | 16:24 | 16:26 | 16:32 | |
| 5 | M1.03 | 2023/08/07 | 15:25 | 16:11 | 16:24 | |
| 6 | C8.2 | 2023/08/07 | 23:50 | 23:59 | 00:05 | |
| 7 | C6.7 | 2023/08/05 | 18:57 | 19:10 | 19:24 | |
| 8 | C6.6 | 2023/08/06 | 10:45 | 11:03 | 11:15 | |
| 9 | C5.6 | 2023/08/05 | 05:21 | 05:29 | 05:36 | |
| 10 | C5.2 | 2023/08/04 | 19:47 | 19:57 | 20:03 |
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
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 140.8 +16.8 |
| Last 30 days | 124.4 +17 |