Viewing archive of Thursday, 18 December 2025 - 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 |
|---|---|---|---|---|
| 87 19 | 2 2 | B4.87 | C3.26 | 3 |
Sunspot regions
Region 14305 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 60 | HSX | S25W87 | |
|
||||
Region 14307 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 | 130 | DAO | S15W86 | |
|
||||
Solar flares on this day | ||||
| C1.2 | ||||
Region 14308 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 10 | AXX | N08W27 | |
|
||||
Solar flares on this day | ||||
| C1.6 | ||||
Region 14310 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -2 | 20 | CRO | N02W67 | |
|
||||
Region 14311 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -1 | 60 10 | CSO | N03W12 | |
|
||||
Solar flares on this day | ||||
| B7.7 | ||||
Region 14312 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 60 | HAX | N18E62 | |
|
||||
Solar flares on this day | ||||
| C3.2 B8.3 B8.9 | ||||
Region 14313 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 10 | AXX | S14E29 | |
|
||||
All times in UTC
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/27 | M5.1 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 115.5 +23.7 |
| Last 30 days | 113.8 +28 |