Viewing archive of Saturday, 2 October 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 |
|---|---|---|---|---|
| 25 -3 | 0 | B1.36 | C1.68 | 1 |
Sunspot regions
Region 12877 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -2 | 150 -50 | DAO | S20W78 | |
|
||||
Solar flares on this day | ||||
| B2.8 C1.7 | ||||
Region 12880 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -1 | 230 -30 | ESO | N32E04 | |
|
||||
Solar flares on this day | ||||
| B2.1 B2.7 | ||||
All times in UTC
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
Filament CME from march 22nd 24Comet C/2026 A1 (MAPS) for the southern hemisphere 22AR4400 17AR4401 22AR4403 11
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/23 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 79.2 +1 |
| Last 30 days | 75.6 -9.1 |