Viewing archive of Sunday, 25 April 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 |
|---|---|---|---|---|
| 57 -5 | 1 -1 | A6.7 | C2.65 | 1 |
Sunspot regions
Region 12816 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -6 | 10 -20 | AXX | S23W60 | |
|
||||
Solar flares on this day | ||||
| C2.6 B1.2 | ||||
Region 12818 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 40 | HSX | S16W01 | |
|
||||
Region 12819 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -2 | 10 | BXO | N25W40 | |
|
||||
Solar flares on this day | ||||
| B1.0 | ||||
Region 12820 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 12 1 | 80 10 | DSO | S22W05 | |
|
||||
Solar flares on this day | ||||
| B3.3 B1.1 B4.8 B2.0 B2.0 B1.4 B1.3 | ||||
Region 12821 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 30 | CRO | S22W16 | |
|
||||
All times in UTC
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Space weather facts
| Last X-flare | 2024/05/15 | X2.9 |
| Last M-flare | 2024/05/17 | M7.1 |
| Last geomagnetic storm | 2024/05/17 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 156.6 +20.1 |
| Last 30 days | 174.5 +64.4 |