Viewing archive of Sunday, 4 July 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 | M |
|---|---|---|---|---|---|
| 60 -21 | 1 | B2.44 | M1.51 | 4 | 1 |
Sunspot regions
Region 12835 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 17 -16 | 540 -80 | DKC | S18W57 | |
|
||||
Solar flares on this day | ||||
| B3.1 C1.7 | ||||
Region 12836 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | S26W64 | |
|
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Region 12837 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 5 | 20 | BXO | N17W13 | |
|
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Region 12838 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 30 | CRO | N24W0* | |
|
||||
Solar flares on this day | ||||
| B5.6 C2.0 C2.1 M1.5 B5.3 | ||||
Region 12839 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 30 | CRO | N19E37 | |
|
||||
Solar flares on this day | ||||
| B5.6 C1.3 B4.7 B3.1 | ||||
All times in UTC
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
AR4366 1019Yes, we really went to the moon before. 1Filaments and prominences 485Unexplained proton activity 111Feb 8-9 CMEs 26
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/11 | M1.3 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 129.4 +16.8 |
| Last 30 days | 129.3 +29.3 |