Viewing archive of Monday, 21 September 2015 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C | M |
|---|---|---|---|---|---|
| 68 -6 | 0 -1 | B4.14 | M1.27 | 3 | 1 |
Sunspot regions
Region 12415 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 12 -7 | 240 | EAC | S19W56 | |
|
||||
Solar flares on this day | ||||
| B7.23 | ||||
Region 12418 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -1 | 210 -20 | CAO | S15W21 | |
|
||||
Region 12419 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -1 | 30 -20 | CAO | N12W19 | |
|
||||
Region 12420 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 12 | 270 | EKC | N09E71 | |
|
||||
Solar flares on this day | ||||
| C4.02 C6.07 B8.62 C2.11 M1.27 B7.02 | ||||
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| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |