Viewing archive of Tuesday, 31 August 2021 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 37 -4 | 0 | B1.38 | B8.41 |
Sunspot regions
Region 12859 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 10 | AXX | N18W60 | |
|
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Region 12860 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 16 -4 | 240 | DAI | S27W51 | |
|
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Solar flares on this day | ||||
| B2.0 B2.6 B3.5 B7.2 B5.7 B6.2 B2.7 B6.6 B2.2 B2.3 B7.3 B2.5 B3.0 B2.2 | ||||
All times in UTC
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
Space Weather Memes 793Feb 8-9 CMEs 24AR4374 9Do the high-resolution sunspot counts point to more complex sunspots? 59AR4366 1007
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/09 | M2.8 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 135.3 +22.7 |
| Last 30 days | 129.4 +28.1 |