Viewing archive of Wednesday, 15 December 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 | C |
|---|---|---|---|---|
| 79 39 | 2 2 | B5.02 | C8.18 | 8 |
Sunspot regions
Region 12905 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 0 -10 | AXX | S11E03 | |
|
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Region 12906 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 120 70 | DAO | S29E09 | |
|
||||
Region 12907 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 12 7 | 260 210 | DKI | S19E36 | |
|
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Solar flares on this day | ||||
| C2.1 C2.9 C2.0 C4.6 C2.9 C1.7 C1.7 C1.6 C1.5 C1.8 C2.3 C8.1 C2.7 C1.5 C4.5 B7.5 | ||||
Region 12908 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 300 | DKO | S19E62 | |
|
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Region 12909 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 150 | DAO | S21E70 | |
|
||||
All times in UTC
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Space weather facts
| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 114.4 -9.6 |
| Last 30 days | 118.6 +9.5 |