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Solar flares in August 1981
C-class391
M-class57
X-class1
LargestX2.61981-08-12
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| August 1980 | 178 | 18 | 0 | M7.8 |
| August 1981 | 391 | 57 | 1 | X2.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-08-12 | 06:24 | 06:26 | 56 | X2.6 | S10W28 | 3257 |
| 1981-08-27 | 03:51 | 04:19 | 179 | M9.0 | N11W40 | 3284 |
| 1981-08-27 | 05:43 | 05:56 | 41 | M7.6 | S13E76 | 3300 |
| 1981-08-03 | 20:15 | 20:28 | 41 | M7.2 | – | 3257 |
| 1981-08-13 | 07:57 | 08:09 | 42 | M5.9 | S10W41 | 3257 |
| 1981-08-28 | 03:36 | 03:46 | 13 | M5.7 | N10W44 | 3293 |
| 1981-08-10 | 06:59 | 06:59 | 29 | M4.8 | S13W15 | 3257 |
| 1981-08-11 | 07:41 | 07:47 | 58 | M4.6 | S13W16 | 3257 |
| 1981-08-11 | 01:44 | 01:46 | 25 | M4.4 | S13W24 | 3257 |
| 1981-08-15 | 01:37 | 01:42 | 26 | M4.3 | S09W80 | 3257 |
| 1981-08-21 | 08:26 | 08:31 | 75 | M4.0 | S16E02 | 3279 |
| 1981-08-30 | 11:35 | 11:41 | 18 | M4.0 | – | 3298 |
| 1981-08-07 | 19:02 | 19:11 | 198 | M3.9 | S10E24 | 3257 |
| 1981-08-11 | 14:40 | 14:52 | 40 | M3.9 | S11W31 | 3257 |
| 1981-08-13 | 02:50 | 02:57 | 44 | M3.6 | S11W46 | 3257 |
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
449 flares of class C or larger in August 1981; by M/X count it ranks 24 of 565 months.