Viewing archive of Monday, 21 August 2023 - 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 |
|---|---|---|---|---|
| 102 9 | 2 2 | B9.01 | C5.76 | 7 |
Sunspot regions
Region 13403 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -4 | 110 -10 | CSO | N26W76 | |
|
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Solar flares on this day | ||||
| C3.1 | ||||
Region 13404 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 20 20 | CAO | S13W36 | |
|
||||
Region 13405 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 110 20 | HSX | N10W21 | |
|
||||
Region 13407 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 | 120 -60 | DAI | S18W58 | |
|
||||
Region 13411 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 60 10 | HSX | N13W03 | |
|
||||
Region 13412 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 70 30 | HSX | N30E32 | |
|
||||
Region 13413 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 150 | HSX | N11E74 | |
|
||||
Solar flares on this day | ||||
| C4.7 | ||||
Region 13414 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 | 20 | CRO | S09E32 | |
|
||||
All times in UTC
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| 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 | 186 +94.2 |
| Last 30 days | 106.4 +13.7 |