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Solar flares in December 1981
C-class271
M-class20
X-class0
LargestM5.21981-12-09
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 1980 | 211 | 38 | 0 | M7.5 |
| December 1981 | 271 | 20 | 0 | M5.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-12-09 | 18:17 | 19:12 | 202 | M5.2 | N12W16 | 3496 |
| 1981-12-09 | 03:27 | 03:45 | 99 | M4.5 | N20W06 | 3492 |
| 1981-12-08 | 22:31 | 22:42 | 19 | M4.0 | – | – |
| 1981-12-15 | 19:45 | 19:48 | 8 | M3.5 | N18W90 | 3492 |
| 1981-12-01 | 08:25 | 08:42 | 47 | M3.4 | N15W16 | 3484 |
| 1981-12-09 | 06:38 | 06:46 | 33 | M3.0 | S17E44 | 3504 |
| 1981-12-12 | 16:41 | 17:04 | 52 | M2.7 | – | – |
| 1981-12-12 | 03:21 | 03:30 | 56 | M2.5 | N02W75 | 3487 |
| 1981-12-01 | 01:01 | 01:05 | 37 | M2.4 | N15W11 | 3484 |
| 1981-12-01 | 16:54 | 16:59 | 76 | M2.1 | N16W19 | 3484 |
| 1981-12-07 | 14:42 | 14:47 | 57 | M1.9 | S06E90 | 3505 |
| 1981-12-13 | 21:29 | 21:29 | 13 | M1.8 | N20W68 | 3492 |
| 1981-12-01 | 05:45 | 05:52 | 33 | M1.7 | N15W13 | 3484 |
| 1981-12-07 | 13:32 | 13:39 | 39 | M1.7 | S05E78 | 3505 |
| 1981-12-07 | 04:21 | 04:33 | 39 | M1.4 | N04E20 | 3496 |
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
291 flares of class C or larger in December 1981; by M/X count it ranks 160 of 565 months.