Viewing archive of Thursday, 22 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 |
|---|---|---|---|---|
| 42 -5 | 0 | B2.31 | C8.56 | 11 |
Sunspot regions
Region 12816 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -3 | 50 -50 | CRO | S24W19 | |
|
||||
Solar flares on this day | ||||
| C3.9 C2.7 | ||||
Region 12817 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -2 | 140 -40 | CSO | N18W92 | |
|
||||
Solar flares on this day | ||||
| B6.3 C1.7 C2.3 B4.5 C4.3 C1.4 C3.7 C8.6 B6.3 B5.5 B5.5 | ||||
Region 12818 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 50 10 | HSX | S17E39 | |
|
||||
All times in UTC
Latest news
Friday, 17 May 2024
Let's compare! Halloween 2003 VS May 2024 Solar Storms!
Friday, 17 May 2024
Coronal mass ejection impact, New website feature!
Wednesday, 15 May 2024
More X-flares!
Latest forum messages
What makes AR3684 magnetically distinct from AR3685? 6Filaments and prominences 129Latest SC25 Predictions 126Unproven theories 481AR3664 1072
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
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 | 157.7 +21.2 |
| Last 30 days | 171.7 +57.7 |