Viewing archive of Thursday, 21 December 2023 - 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 | M |
|---|---|---|---|---|---|
| 138 5 | 0 -1 | C1.31 | M4.25 | 11 | 1 |
Sunspot regions
Region 13519 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 | 180 40 | DAI | S52W72 | |
|
||||
Solar flares on this day | ||||
| M4.2 C3.2 C1.8 C2.0 | ||||
Region 13521 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 4 | 100 20 | DSI | N12W09 | |
|
||||
Solar flares on this day | ||||
| C2.2 C2.2 | ||||
Region 13524 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 10 5 | BXO | N28E05 | |
|
||||
Solar flares on this day | ||||
| C2.1 | ||||
Region 13526 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 2 | 170 -30 | CAI | N15E17 | |
|
||||
Solar flares on this day | ||||
| C4.1 | ||||
Region 13527 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 25 | CAO | S01W98 | |
|
||||
Region 13528 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 | 170 30 | DAI | N08W29 | |
|
||||
Solar flares on this day | ||||
| C2.2 | ||||
Region 13529 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 12 | 430 -20 | DKO | S22E14 | |
|
||||
Solar flares on this day | ||||
| C5.5 C3.9 C4.0 | ||||
Region 13530 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -1 | 30 -150 | BXO | N08E35 | |
|
||||
Region 13531 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 70 10 | HSX | S21E55 | |
|
||||
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |