Viewing archive of Thursday, 21 August 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 |
|---|---|---|---|---|
| 76 17 | 1 -1 | B6.98 | C3.27 | 4 |
Sunspot regions
Region 14187 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 1 | 40 | CAO | S18W22 | |
|
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Region 14188 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 40 | HSX | S09E29 | |
|
||||
Solar flares on this day | ||||
| C1.7 | ||||
Region 14189 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 4 | 30 20 | CRO | N08E18 | |
|
||||
Region 14190 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N18E42 | |
|
||||
Region 14191 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 220 140 | HSX | N10E65 | |
|
||||
Solar flares on this day | ||||
| C3.2 C1.3 C2.3 C1.1 | ||||
Region 14192 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 10 | BXO | N28W28 | |
|
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All times in UTC
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/16 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 94.2 -18.4 |
| Last 30 days | 108.9 -4.7 |