Sunspot region AR13621
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2024/03/23 | 4 | 20 | CRO | N17W38 | |
| 2024/03/24 | 3 | 20 | CSO | N17W51 | |
| 2024/03/25 | 5 | 40 | CSO | N17W70 | |
| 2024/03/26 | 3 | 30 | CSO | N15W78 | |
| 2024/03/27 | 3 | 30 | CSO | N15W94 | |
| 2024/03/28 | 3 | 30 | CSO | N15W0* |
2024/03/23
2024/03/24
2024/03/25
2024/03/26
2024/03/27
2024/03/28
|
2024/03/23
2024/03/24
2024/03/25
2024/03/26
2024/03/27
2024/03/28
|
| C |
|---|
| 2 |
The top 2 solar flares from sunspot region 13621
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C5.0 | 2024/03/25 | 12:00 | 12:10 | 12:15 | |
| 2 | C2.7 | 2024/03/25 | 22:57 | 23:10 | 23:26 |
Latest news
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CME impact! S4 solar radiation storm
Sunday, 18 January 2026
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Wednesday, 31 December 2025
Happy New Year! Celebrate with an M7.1 solar flare!
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Do the high-resolution sunspot counts point to more complex sunspots? 32Broad-spectrum aurora pillars 21CH 17 5Current Farside Activity 349Unspecified geomagnetic activity 63
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Space weather facts
| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.3 -4.7 |
| Last 30 days | 120.3 +3.4 |