Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 6906
C14
M6
X1
LargestX1.11991-11-09
Span5 days
Flares by day
4
5
2
8
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-11-05 | 15:52 | 16:18 | 46 | C4.9 | S15W13 | 6906 |
| 1991-11-05 | 19:28 | 19:33 | 12 | C3.0 | S16W12 | 6906 |
| 1991-11-05 | 20:07 | 20:59 | 86 | C4.5 | S15W12 | 6906 |
| 1991-11-05 | 22:05 | 22:08 | 24 | M1.1 | S14W16 | 6906 |
| 1991-11-06 | 04:46 | 04:48 | 24 | M4.7 | S14W20 | 6906 |
| 1991-11-06 | 10:29 | 10:41 | 18 | C2.4 | S16W20 | 6906 |
| 1991-11-06 | 11:25 | 11:35 | 20 | C7.2 | S15W25 | 6906 |
| 1991-11-06 | 19:24 | 19:25 | 30 | M1.2 | S15W23 | 6906 |
| 1991-11-06 | 22:51 | 23:56 | 109 | M2.8 | S13W31 | 6906 |
| 1991-11-07 | 01:39 | 01:47 | 32 | C5.1 | S17W28 | 6906 |
| 1991-11-07 | 18:19 | 18:34 | 21 | C2.5 | S13W41 | 6906 |
| 1991-11-08 | 00:44 | 00:49 | 24 | C4.1 | S15W41 | 6906 |
| 1991-11-08 | 02:13 | 02:29 | 40 | C5.1 | S15W41 | 6906 |
| 1991-11-08 | 04:51 | 04:54 | 28 | C2.8 | S18W47 | 6906 |
| 1991-11-08 | 07:13 | 07:22 | 33 | C2.4 | S15W44 | 6906 |
| 1991-11-08 | 09:05 | 09:11 | 17 | C2.2 | S18W43 | 6906 |
| 1991-11-08 | 10:44 | 11:02 | 21 | C8.0 | S16W46 | 6906 |
| 1991-11-08 | 13:14 | 13:14 | 5 | C2.9 | S18W44 | 6906 |
| 1991-11-08 | 17:11 | 17:12 | 16 | M4.2 | S15W42 | 6906 |
| 1991-11-09 | 15:32 | 15:50 | 97 | X1.1 | S16W57 | 6906 |
| 1991-11-09 | 20:52 | 20:52 | 13 | M1.4 | S14W69 | 6906 |
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 6906 produced 21 C+ flares between 1991-11-05 and 1991-11-09.