Viewing archive of Saturday, 24 April 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 |
|---|---|---|---|
| 62 33 | 2 2 | B1.32 | B7 |
Sunspot regions
Region 12816 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 -1 | 30 -20 | CRO | S24W44 | |
|
||||
Solar flares on this day | ||||
| B1.8 | ||||
Region 12818 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 40 -10 | HSX | S16E10 | |
|
||||
Region 12819 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 10 | BXO | N25W28 | |
|
||||
Region 12820 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 11 | 70 | DAI | S21E05 | |
|
||||
Solar flares on this day | ||||
| B4.3 B4.4 B2.3 B1.0 B4.5 B1.6 B6.6 B3.0 B1.3 B2.3 B3.8 B1.8 B2.4 B2.7 | ||||
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | M1.2 |
| 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 | 162.7 +70.9 |
| Last 30 days | 107.4 +11.4 |