Sunspot region AR13390
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/07/28 | 1 | 20 | HRX | S18E70 | |
| 2023/07/29 | 3 | 30 | CRO | S18E56 | |
| 2023/07/30 | 3 | 20 | CRO | S20E47 | |
| 2023/07/31 | 2 | 20 | DSO | S19E32 | |
| 2023/08/01 | 2 | 20 | DSO | S20E20 | |
| 2023/08/02 | 2 | 10 | BXO | S19E06 | |
| 2023/08/03 | 1 | 10 | AXX | S20W08 |
2023/07/28
2023/07/29
2023/07/30
2023/07/31
2023/08/01
2023/08/02
2023/08/03
|
2023/07/28
2023/07/29
2023/07/30
2023/07/31
2023/08/01
2023/08/02
2023/08/03
|
| C | M |
|---|---|
| 6 | 3 |
The top 9 solar flares from sunspot region 13390
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.87 | 2023/07/30 | 08:18 | 08:22 | 08:26 | |
| 2 | M1.85 | 2023/07/30 | 08:01 | 08:14 | 08:18 | |
| 3 | M1.7 | 2023/07/31 | 08:42 | 09:00 | 09:13 | |
| 4 | C9.1 | 2023/07/29 | 10:18 | 10:36 | 10:52 | |
| 5 | C7.7 | 2023/07/28 | 14:44 | 14:51 | 15:05 | |
| 6 | C6.8 | 2023/07/31 | 04:34 | 04:47 | 05:00 | |
| 7 | C5.9 | 2023/07/28 | 20:42 | 20:58 | 21:10 | |
| 8 | C3.0 | 2023/07/28 | 13:39 | 13:44 | 13:54 | |
| 9 | C1.8 | 2023/07/31 | 03:12 | 03:17 | 03:22 |
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
Unspecified geomagnetic activity 185AR4431 15Incoming & Unnumbered Active Regions 316Filaments and prominences 551AR4433 1
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/04 | M1.9 |
| Last geomagnetic storm | 2026/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 143 +63.7 |
| Last 30 days | 91.9 -4.8 |
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