Solar Flare WatchSolar flares in 1981
C3502
M485
X35
LargestX5.91981-04-24
M/X flares by month
- January 1981
- February 1981
- March 1981
- April 1981
- May 1981
- June 1981
- July 1981
- August 1981
- September 1981
- October 1981
- November 1981
- December 1981
Nearby years (M + X)
15
41
195
309
406
520
596
112
121
16
22
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-04-24 | 13:46 | 14:11 | 229 | X5.9 | N18W50 | 3049 |
| 1981-04-27 | 07:20 | 08:20 | 145 | X5.5 | – | 3049 |
| 1981-02-26 | 19:22 | 19:53 | 41 | X4.0 | S15E50 | 2958 |
| 1981-10-07 | 22:57 | 23:15 | 41 | X3.6 | S19E88 | 3390 |
| 1981-07-26 | 13:44 | 13:54 | 40 | X3.5 | S15E27 | 3234 |
| 1981-10-12 | 06:22 | 06:36 | 55 | X3.1 | – | 3390 |
| 1981-10-14 | 17:05 | 17:10 | 58 | X3.0 | S06E86 | 3406 |
| 1981-07-19 | 05:32 | 05:34 | 65 | X2.7 | S37W56 | 3204 |
| 1981-08-12 | 06:24 | 06:26 | 56 | X2.6 | S10W28 | 3257 |
| 1981-04-10 | 16:32 | 17:03 | 32 | X2.5 | N07W35 | 3025 |
| 1981-02-20 | 06:40 | 06:43 | 67 | X2.4 | N19W49 | 2941 |
| 1981-02-24 | 12:02 | 12:26 | 62 | X2.3 | – | 2954 |
| 1981-04-01 | 01:15 | 01:17 | 86 | X2.3 | S43W52 | 2999 |
| 1981-09-15 | 21:13 | 21:14 | 15 | X2.3 | N10W78 | 3317 |
| 1981-03-25 | 20:39 | 20:48 | 44 | X2.2 | N09W89 | 2984 |
| 1981-04-02 | 11:03 | 11:05 | 25 | X2.2 | S43W68 | 2999 |
| 1981-01-25 | 07:43 | 07:47 | 18 | X2.1 | – | 2911 |
| 1981-04-04 | 05:02 | 05:03 | 3 | X1.9 | S44W85 | 2999 |
| 1981-02-26 | 14:21 | 14:26 | 17 | X1.8 | S12E53 | 2958 |
| 1981-07-17 | 07:53 | 08:09 | 37 | X1.7 | – | 3221 |
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
4,022 flares of class C+ in 1981: 485 M-class and 35 X-class.