Viewing archive of Sunday, 21 May 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 | M |
|---|---|---|---|---|---|
| 140 2 | 0 -1 | C1.93 | M2.6 | 11 | 2 |
Sunspot regions
Region 13302 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 | HSX | N18W85 | |
|
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Region 13305 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 -8 | 210 -40 | DAI | N12W82 | |
|
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Solar flares on this day | ||||
| C2.5 C4.1 C4.5 C5.4 C4.6 C4.5 C9.9 | ||||
Region 13308 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -2 | 40 -10 | CAO | N12W65 | |
|
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Region 13310 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -2 | 300 -10 | CKO | S20E21 | |
|
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Region 13311 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 31 13 | 420 10 | EKC | N18E33 | |
|
||||
Solar flares on this day | ||||
| M1.4 C4.9 C3.0 C3.0 C4.9 M2.6 | ||||
Region 13312 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 3 | 30 | CRO | S23E38 | |
|
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Region 13313 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 60 10 | HSX | N22E46 | |
|
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Region 13314 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -2 | 20 | HRX | N12E21 | |
|
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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 | 106.3 +12.6 |