Sunspot region AR13998
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/02/16 | 4 | 90 | CAO | S14E67 | |
| 2025/02/17 | 16 | 150 | DAI | S14E52 | |
| 2025/02/18 | 19 | 170 | DAI | S14E40 | |
| 2025/02/19 | 12 | 200 | DAI | S14E26 | |
| 2025/02/20 | 18 | 220 | DAI | S14E12 | |
| 2025/02/21 | 22 | 220 | EAI | S14W02 | |
| 2025/02/22 | 28 | 280 | EKI | S14W16 | |
| 2025/02/23 | 28 | 290 | EKC | S14W28 | |
| 2025/02/24 | 34 | 430 | EKC | S14W42 | |
| 2025/02/25 | 28 | 400 | EKC | S14W56 | |
| 2025/02/26 | 22 | 320 | EKC | S14W70 | |
| 2025/02/27 | 22 | 320 | EKC | S14W84 | |
| 2025/02/28 | 22 | 320 | EKC | S14W98 |
2025/02/16
2025/02/17
2025/02/18
2025/02/19
2025/02/20
2025/02/21
2025/02/22
2025/02/23
2025/02/24
2025/02/25
2025/02/26
2025/02/27
2025/02/28
|
2025/02/16
2025/02/17
2025/02/18
2025/02/19
2025/02/20
2025/02/21
2025/02/22
2025/02/23
2025/02/24
2025/02/25
2025/02/26
2025/02/27
2025/02/28
|
| C | M |
|---|---|
| 52 | 4 |
The top 10 solar flares from sunspot region 13998
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.6 | 2025/02/25 | 11:20 | 11:59 | 12:44 | |
| 2 | M1.3 | 2025/02/25 | 02:43 | 02:47 | 02:54 | |
| 3 | M1.0 | 2025/02/23 | 09:54 | 09:56 | 10:01 | |
| 4 | M1.0 | 2025/02/23 | 16:18 | 16:35 | 16:51 | |
| 5 | C9.4 | 2025/02/23 | 17:17 | 17:21 | 17:31 | |
| 6 | C9.3 | 2025/02/27 | 23:12 | 23:24 | 23:34 | |
| 7 | C8.7 | 2025/02/24 | 13:02 | 13:20 | 13:33 | |
| 8 | C8.1 | 2025/02/24 | 21:30 | 21:40 | 21:50 | |
| 9 | C7.5 | 2025/02/23 | 09:01 | 09:14 | 09:22 | |
| 10 | C7.5 | 2025/02/27 | 12:23 | 12:36 | 12:47 |
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/23 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 79.2 +1 |
| Last 30 days | 75.6 -9.1 |