Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 3451
C37
M8
X1
LargestX1.21981-11-12
Span11 days
Flares by day
2
2
2
10
14
4
5
1
4
1
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-11-09 | 00:23 | 00:28 | 25 | C9.2 | N18E31 | 3451 |
| 1981-11-09 | 07:13 | 07:14 | 39 | C8.1 | N20E20 | 3451 |
| 1981-11-10 | 00:24 | 00:38 | 18 | C1.6 | – | 3451 |
| 1981-11-10 | 14:58 | 15:02 | 152 | C4.7 | – | 3451 |
| 1981-11-11 | 04:35 | 04:43 | 36 | C5.1 | N19E06 | 3451 |
| 1981-11-11 | 14:48 | 14:52 | 15 | C7.3 | N19E01 | 3451 |
| 1981-11-12 | 03:34 | 03:42 | 28 | C9.4 | N18W07 | 3451 |
| 1981-11-12 | 11:15 | 11:56 | 52 | C7.4 | N19W14 | 3451 |
| 1981-11-12 | 12:19 | 12:39 | 44 | C6.4 | N18W15 | 3451 |
| 1981-11-12 | 14:10 | 14:16 | 23 | C4.6 | N18W13 | 3451 |
| 1981-11-12 | 15:41 | 16:06 | 50 | X1.2 | – | 3451 |
| 1981-11-12 | 18:18 | 19:26 | 96 | C8.6 | N19W17 | 3451 |
| 1981-11-12 | 21:54 | 22:00 | 8 | C3.0 | N18W20 | 3451 |
| 1981-11-12 | 22:46 | 22:56 | 17 | C4.3 | N19W20 | 3451 |
| 1981-11-12 | 23:15 | 23:22 | 9 | C3.4 | – | 3451 |
| 1981-11-12 | 23:48 | 23:51 | 21 | C5.7 | N18W20 | 3451 |
| 1981-11-13 | 00:47 | 00:55 | 29 | M1.0 | – | 3451 |
| 1981-11-13 | 02:01 | 02:07 | 18 | M1.0 | N18W21 | 3451 |
| 1981-11-13 | 02:27 | 02:40 | 25 | C5.9 | N18W23 | 3451 |
| 1981-11-13 | 02:54 | 03:47 | 60 | M1.0 | N19W22 | 3451 |
| 1981-11-13 | 03:25 | 03:28 | 31 | M1.4 | N18W21 | 3451 |
| 1981-11-13 | 06:15 | 06:18 | 7 | C3.4 | N18W23 | 3451 |
| 1981-11-13 | 08:07 | 08:12 | 19 | M1.0 | N19W21 | 3451 |
| 1981-11-13 | 11:26 | 11:35 | 102 | M1.3 | N18W26 | 3451 |
| 1981-11-13 | 14:00 | 15:07 | 140 | C2.9 | N18W26 | 3451 |
| 1981-11-13 | 15:43 | 15:44 | 1 | C2.4 | – | 3451 |
| 1981-11-13 | 16:37 | 16:49 | 39 | M3.0 | N18W30 | 3451 |
| 1981-11-13 | 18:24 | 18:28 | 12 | C9.6 | N18W32 | 3451 |
| 1981-11-13 | 19:22 | 19:23 | 22 | C7.1 | N18W31 | 3451 |
| 1981-11-13 | 23:17 | 23:19 | 13 | C5.9 | N18W33 | 3451 |
| 1981-11-14 | 04:21 | 04:25 | 9 | C5.3 | N18W35 | 3451 |
| 1981-11-14 | 07:26 | 07:26 | 10 | C8.0 | N19W35 | 3451 |
| 1981-11-14 | 19:24 | 19:28 | 17 | C3.2 | N18W43 | 3451 |
| 1981-11-14 | 22:09 | 22:19 | 48 | M5.0 | N16W49 | 3451 |
| 1981-11-15 | 07:49 | 07:54 | 17 | C2.4 | N19W50 | 3451 |
| 1981-11-15 | 15:28 | 15:29 | 31 | C2.9 | N20W51 | 3451 |
| 1981-11-15 | 16:41 | 16:44 | 5 | C2.1 | – | 3451 |
| 1981-11-15 | 17:57 | 18:00 | 9 | C1.8 | – | 3451 |
| 1981-11-15 | 18:53 | 18:58 | 13 | C2.7 | N19W55 | 3451 |
| 1981-11-16 | 00:37 | 00:49 | 32 | C4.4 | N20W58 | 3451 |
| 1981-11-17 | 03:29 | 03:35 | 20 | C2.2 | N19W72 | 3451 |
| 1981-11-17 | 16:44 | 16:44 | 6 | C1.9 | N21W74 | 3451 |
| 1981-11-17 | 21:35 | 21:40 | 9 | C1.1 | N21W78 | 3451 |
| 1981-11-17 | 23:28 | 23:28 | 13 | C1.2 | N18W81 | 3451 |
| 1981-11-18 | 20:01 | 21:33 | 93 | C3.6 | – | 3451 |
| 1981-11-19 | 02:29 | 02:48 | 49 | C8.5 | – | 3451 |
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 3451 produced 46 C+ flares between 1981-11-09 and 1981-11-19.