Viewing archive of Friday, 4 December 2020 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 38 -2 | 0 | B2.41 | C1.44 |
Sunspot regions
Region 12785 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 120 -40 | HSX | S24W89 | |
|
||||
Region 12786 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 460 50 | HKX | S17W72 | |
|
||||
Solar flares on this day | ||||
| B5.1 B5.0 B4.8 | ||||
Region 12790 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -2 | 100 -10 | CAO | S23E24 | |
|
||||
Solar flares on this day | ||||
| B5.3 | ||||
All times in UTC
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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| December 2025 | 131.8 +40 |
| Last 30 days | 108.3 +14.5 |