Viewing archive of Friday, 31 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 |
|---|---|---|---|---|
| 53 -24 | 1 1 | B2.63 | C9.88 | 5 |
Sunspot regions
Region 12916 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 -6 | 420 -220 | EHI | N20W67 | |
|
||||
Solar flares on this day | ||||
| B4.5 B4.5 B7.9 | ||||
Region 12917 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | S27W90 | |
|
||||
Region 12918 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -7 | 20 -40 | BXO | S16W49 | |
|
||||
Solar flares on this day | ||||
| C1.9 C4.6 C9.8 C8.2 B6.3 | ||||
Region 12919 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -30 | HRX | S11W13 | |
|
||||
Region 12921 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 300 | DSO | N30W0* | |
|
||||
Region 12922 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | S17E24 | |
|
||||
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Space weather facts
| Last X-flare | 2024/09/14 | X4.54 |
| Last M-flare | 2024/09/14 | M3.0 |
| Last geomagnetic storm | 2024/09/17 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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| September 2024 | 149.4 -66.1 |
| Last 30 days | 156.7 -55.8 |