Viewing archive of Tuesday, 21 September 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 |
|---|---|---|---|---|
| 50 -1 | 0 -2 | B1.03 | C1.85 | 3 |
Sunspot regions
Region 12871 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 2 | 310 70 | DKO | S28E37 | |
|
||||
Solar flares on this day | ||||
| B2.7 B2.1 B4.1 B3.1 B2.3 B3.0 B1.8 B3.3 B1.9 B1.7 B2.1 C1.1 B1.6 B5.2 | ||||
Region 12872 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -3 | 10 -20 | BXO | N18E25 | |
|
||||
Solar flares on this day | ||||
| B4.2 | ||||
Region 12873 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 | 110 100 | DAO | N25W23 | |
|
||||
Solar flares on this day | ||||
| B2.3 C1.1 B8.9 B5.2 C1.8 B1.6 | ||||
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
AR 13932 31Unspecified geomagnetic activity 1752Incoming & Unnumbered Active Regions 1364Ask your obscure/"stupid" space weather questions. 114Strong far side CME 340
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 | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/23 | M8.9 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 106.6 -45.9 |
| Last 30 days | 116.1 -41.8 |