Viewing archive of Thursday, 21 December 2017 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 18 2 | 0 -1 | A8.29 | B1.79 |
Sunspot regions
Region 12692 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 70 | CAO | N16E45 | |
|
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Solar flares on this day | ||||
| B1.36 | ||||
All times in UTC
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Unspecified geomagnetic activity 1643Space Weather Memes 571sun goes blank 75AR13883 2024/11/04 CME 45Incoming & Unnumbered Active Regions 1209
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/13 | M1.7 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |