Sunspot region AR13423
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/09/04 | 6 | 10 | BXO | N17E59 | |
| 2023/09/05 | 8 | 90 | DAO | N16E47 | |
| 2023/09/06 | 14 | 245 | DAO | N16E35 | |
| 2023/09/07 | 15 | 240 | DAO | N17E18 | |
| 2023/09/08 | 23 | 280 | EKI | N16E10 | |
| 2023/09/09 | 32 | 380 | EKC | N16W03 | |
| 2023/09/10 | 21 | 380 | EKC | N12W17 | |
| 2023/09/11 | 21 | 420 | EKC | N17W36 | |
| 2023/09/12 | 15 | 340 | EKC | N16W46 | |
| 2023/09/13 | 9 | 280 | EKO | N17W63 | |
| 2023/09/14 | 6 | 260 | EKO | N16W72 | |
| 2023/09/15 | 6 | 220 | EAO | N15W86 | |
| 2023/09/16 | 5 | 100 | EAO | N17W0* |
2023/09/04
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2023/09/04
2023/09/05
2023/09/06
2023/09/07
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2023/09/09
2023/09/10
2023/09/11
2023/09/12
2023/09/13
2023/09/14
2023/09/15
2023/09/16
|
| C | M |
|---|---|
| 14 | 1 |
The top 10 solar flares from sunspot region 13423
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.5 | 2023/09/12 | 06:47 | 07:07 | 07:19 | |
| 2 | C8.3 | 2023/09/10 | 01:41 | 01:55 | 02:10 | |
| 3 | C7.3 | 2023/09/11 | 10:25 | 10:37 | 10:48 | |
| 4 | C5.6 | 2023/09/12 | 21:50 | 22:00 | 22:07 | |
| 5 | C5.4 | 2023/09/13 | 08:04 | 08:10 | 08:17 | |
| 6 | C3.6 | 2023/09/10 | 04:19 | 04:35 | 05:03 | |
| 7 | C3.3 | 2023/09/07 | 05:05 | 05:24 | 05:38 | |
| 8 | C3.1 | 2023/09/10 | 22:15 | 22:26 | 22:43 | |
| 9 | C3.1 | 2023/09/12 | 11:32 | 11:37 | 11:42 | |
| 10 | C3.0 | 2023/09/07 | 11:41 | 11:47 | 11:51 |
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
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/28 | M1.3 |
| Last geomagnetic storm | 2026/03/25 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 85.2 +7 |
| Last 30 days | 85.2 +8.6 |
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