Viewing archive of Tuesday, 27 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 |
|---|---|---|---|
| 47 -7 | 0 | A7.47 | B3.38 |
Sunspot regions
Region 12818 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -30 | HSX | S17W27 | |
|
||||
Region 12820 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 11 -4 | 70 -40 | ESI | S21W32 | |
|
||||
Solar flares on this day | ||||
| B2.2 | ||||
Region 12821 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -3 | 60 -10 | DAI | S22W43 | |
|
||||
Solar flares on this day | ||||
| B1.2 B1.1 B2.7 B3.3 | ||||
All times in UTC
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| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
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|---|---|
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