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Solar flares from active region 6811
C21
M3
X0
LargestM2.91991-08-31
Span11 days
Flares by day
3
3
1
5
4
2
1
4
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-08-29 | 07:56 | 08:15 | 85 | C3.5 | S19E56 | 6811 |
| 1991-08-29 | 11:28 | 11:34 | 12 | C1.7 | S19E54 | 6811 |
| 1991-08-29 | 16:24 | 16:30 | 31 | C3.8 | S19E54 | 6811 |
| 1991-08-30 | 01:14 | 01:17 | 34 | M2.6 | S21E48 | 6811 |
| 1991-08-30 | 05:48 | 05:50 | 42 | C2.3 | S19E47 | 6811 |
| 1991-08-30 | 22:31 | 22:35 | 35 | C3.2 | S20E36 | 6811 |
| 1991-08-31 | 01:50 | 02:01 | 83 | M2.9 | S20E33 | 6811 |
| 1991-09-01 | 00:20 | 00:30 | 17 | C1.8 | S20E25 | 6811 |
| 1991-09-01 | 02:05 | 02:09 | 21 | C6.1 | S21E32 | 6811 |
| 1991-09-01 | 04:55 | 05:00 | 27 | C2.6 | S21E31 | 6811 |
| 1991-09-01 | 07:17 | 07:17 | 14 | C1.5 | S21E30 | 6811 |
| 1991-09-01 | 10:35 | 10:38 | 23 | C3.8 | S20E12 | 6811 |
| 1991-09-02 | 07:07 | 07:10 | 10 | C1.4 | S20W00 | 6811 |
| 1991-09-02 | 10:57 | 11:06 | 85 | C6.6 | S20E01 | 6811 |
| 1991-09-02 | 12:26 | 12:32 | 25 | C4.2 | S21E07 | 6811 |
| 1991-09-02 | 21:13 | 21:46 | 52 | C1.9 | S19W03 | 6811 |
| 1991-09-03 | 03:02 | 03:16 | 73 | C3.3 | S17W04 | 6811 |
| 1991-09-03 | 07:02 | 07:17 | 45 | C3.1 | S21W09 | 6811 |
| 1991-09-05 | 21:21 | 22:04 | 139 | M2.9 | S19W37 | 6811 |
| 1991-09-06 | 00:55 | 01:03 | 17 | C8.7 | S24W41 | 6811 |
| 1991-09-06 | 13:00 | 13:01 | 16 | C3.0 | S24W51 | 6811 |
| 1991-09-06 | 14:04 | 14:10 | 40 | C3.9 | S21W53 | 6811 |
| 1991-09-06 | 20:36 | 20:38 | 20 | C5.4 | S23W52 | 6811 |
| 1991-09-08 | 16:53 | 16:54 | 8 | C8.9 | S20W83 | 6811 |
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 6811 produced 24 C+ flares between 1991-08-29 and 1991-09-08.