Viewing archive of Wednesday, 13 September 2017 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 11 | 0 | A2.29 | B2.1 |
Sunspot regions
Region 12674 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 30 | HRX | N16W0* | |
Region 12680 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 140 60 | HSX | N09E39 | |
|
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Solar flares on this day | ||||
| B1.27 B1.71 | ||||
All times in UTC
Latest news
Saturday, 4 January 2025
Sunspot region 3947, X-class solar flares
Monday, 30 December 2024
Two earth-directed coronal mass ejections
Sunday, 29 December 2024
Strong G3 geoamagnetic storm watch issued
Latest forum messages
AR13939 2025/01/04 CME 43AR 3947 15506/01/2025 M 4.87 flare with a faint CME 1correcting common misconceptions about space weather 19Sunspot image over time feature not working 2
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/06 | M4.9 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2024 | 154.5 +2 |
| January 2025 | 179.4 +24.9 |
| Last 30 days | 150.6 +26 |