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Solar flares from active region 4021
C7
M5
X0
LargestM5.01982-12-17
Span12 days
Flares by day
1
4
1
2
3
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1982-12-07 | 10:01 | 10:09 | 35 | M1.5 | S27E75 | 4021 |
| 1982-12-11 | 02:47 | 02:48 | 11 | M1.1 | S14E20 | 4021 |
| 1982-12-11 | 03:43 | 03:46 | 37 | C6.0 | S14E19 | 4021 |
| 1982-12-11 | 05:44 | 05:45 | 6 | C7.6 | S13E19 | 4021 |
| 1982-12-11 | 21:24 | 21:29 | 10 | C7.0 | S15E11 | 4021 |
| 1982-12-12 | 23:22 | 23:26 | 15 | C2.3 | S17E00 | 4021 |
| 1982-12-16 | 19:24 | 19:29 | 110 | M1.3 | S17W51 | 4021 |
| 1982-12-16 | 22:11 | 22:12 | 19 | C3.8 | S16W53 | 4021 |
| 1982-12-17 | 04:40 | 04:51 | 40 | C8.7 | S20W54 | 4021 |
| 1982-12-17 | 10:02 | 10:04 | 16 | M1.3 | S18W61 | 4021 |
| 1982-12-17 | 22:17 | 22:50 | 39 | M5.0 | S16W66 | 4021 |
| 1982-12-18 | 19:49 | 19:52 | 29 | C4.2 | S11W85 | 4021 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
NOAA active region 4021 produced 12 C+ flares between 1982-12-07 and 1982-12-18.