Sunspot region AR12387
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/07/17 | 5 | 30 | CAI | N17E61 | |
| 2015/07/18 | 7 | 40 | DAC | N17E47 | |
| 2015/07/19 | 7 | 120 | DAI | N17E34 | |
| 2015/07/20 | 11 | 100 | DAI | N17E18 | |
| 2015/07/21 | 18 | 120 | DAI | N17E04 | |
| 2015/07/22 | 16 | 110 | DAI | N16W10 | |
| 2015/07/23 | 14 | 60 | CSI | N17W24 | |
| 2015/07/24 | 6 | 20 | CRO | N16W35 | |
| 2015/07/25 | 5 | 10 | BXO | N17W48 |
2015/07/17
2015/07/18
2015/07/19
2015/07/20
2015/07/21
2015/07/22
2015/07/23
2015/07/24
2015/07/25
|
2015/07/17
2015/07/18
2015/07/19
2015/07/20
2015/07/21
2015/07/22
2015/07/23
2015/07/24
2015/07/25
|
| B |
|---|
| 3 |
The top 3 solar flares from sunspot region 12387
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B7.99 | 2015/07/16 | 21:00 | 21:11 | 21:20 | |
| 2 | B6.9 | 2015/07/17 | 15:53 | 15:59 | 16:05 | |
| 3 | B3.73 | 2015/07/21 | 12:16 | 12:20 | 12:25 |
Latest news
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
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Tuesday, 11 November 2025
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.4 +13.7 |