Viewing archive of Saturday, 28 August 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 | M |
|---|---|---|---|---|---|
| 77 4 | 0 -1 | B3.72 | M4.79 | 7 | 1 |
Sunspot regions
Region 12859 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 1 | 40 -10 | CAO | N17W20 | |
|
||||
Region 12860 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 27 5 | 340 10 | EKI | S27W11 | |
|
||||
Solar flares on this day | ||||
| C1.0 C1.0 C7.0 M4.79 C4.3 C2.8 C1.7 C1.7 B8.9 C1.4 | ||||
Region 12861 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N15E25 | |
|
||||
Region 12862 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -2 | 10 -40 | BXO | S28W80 | |
|
||||
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | M2.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| Last 30 days | 108 +13.3 |