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Solar flares in October 1981
C-class420
M-class40
X-class3
LargestX3.61981-10-07
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| October 1980 | 248 | 31 | 2 | X3.9 |
| October 1981 | 420 | 40 | 3 | X3.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-10-07 | 22:57 | 23:15 | 41 | X3.6 | S19E88 | 3390 |
| 1981-10-12 | 06:22 | 06:36 | 55 | X3.1 | – | 3390 |
| 1981-10-14 | 17:05 | 17:10 | 58 | X3.0 | S06E86 | 3406 |
| 1981-10-12 | 10:37 | 11:01 | 51 | M9.2 | S16E32 | 3390 |
| 1981-10-12 | 04:29 | 04:37 | 28 | M7.5 | – | – |
| 1981-10-13 | 18:11 | 18:11 | 63 | M3.7 | S13E11 | 3390 |
| 1981-10-15 | 05:52 | 05:56 | 28 | M3.7 | S24W19 | 3397 |
| 1981-10-13 | 07:08 | 07:13 | 17 | M3.2 | S13E15 | 3390 |
| 1981-10-12 | 14:42 | 14:42 | 10 | M3.1 | S11E78 | 3403 |
| 1981-10-02 | 16:29 | 16:36 | 22 | M2.9 | – | 3375 |
| 1981-10-16 | 12:44 | 12:48 | 39 | M2.9 | S19W36 | 3397 |
| 1981-10-01 | 17:00 | 23:08 | 375 | M2.1 | N09E70 | 3377 |
| 1981-10-13 | 03:05 | 03:31 | 26 | M2.1 | S14E85 | – |
| 1981-10-18 | 10:59 | 11:32 | 102 | M2.1 | – | 3390 |
| 1981-10-02 | 20:52 | 20:59 | 20 | M2.0 | – | – |
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.
← September 1981November 1981 →
About this page
463 flares of class C or larger in October 1981; by M/X count it ranks 58 of 565 months.