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Solar flares from active region 6853
C17
M8
X0
LargestM7.31991-09-29
Span10 days
Flares by day
2
2
7
6
1
2
3
1
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-09-26 | 06:20 | 07:17 | 72 | M1.7 | S18E76 | 6853 |
| 1991-09-26 | 12:24 | 12:28 | 32 | M3.4 | S19E75 | 6853 |
| 1991-09-27 | 03:53 | 03:53 | 7 | C8.5 | S18E61 | 6853 |
| 1991-09-27 | 15:48 | 16:01 | 91 | C7.0 | S18E56 | 6853 |
| 1991-09-29 | 06:45 | 06:45 | 15 | C2.6 | S20E43 | 6853 |
| 1991-09-29 | 08:18 | 08:18 | 12 | C2.6 | S20E42 | 6853 |
| 1991-09-29 | 13:06 | 13:15 | 45 | C2.8 | S19E38 | 6853 |
| 1991-09-29 | 14:09 | 14:12 | 12 | C2.7 | S21E38 | 6853 |
| 1991-09-29 | 15:13 | 15:31 | 146 | M7.3 | S21E32 | 6853 |
| 1991-09-29 | 19:21 | 19:23 | 17 | C4.9 | S19E32 | 6853 |
| 1991-09-29 | 21:20 | 21:21 | 5 | C3.1 | S19E32 | 6853 |
| 1991-09-30 | 01:21 | 01:22 | 14 | C2.7 | S19E30 | 6853 |
| 1991-09-30 | 04:25 | 04:29 | 20 | C2.0 | S21E28 | 6853 |
| 1991-09-30 | 06:39 | 07:18 | 62 | C2.5 | S19E28 | 6853 |
| 1991-09-30 | 08:20 | 08:21 | 10 | C1.9 | S20E24 | 6853 |
| 1991-09-30 | 12:54 | 13:06 | 37 | C4.6 | S20E24 | 6853 |
| 1991-09-30 | 14:52 | 15:05 | 36 | C7.1 | S19E23 | 6853 |
| 1991-10-01 | 06:10 | 06:16 | 15 | M3.0 | S22E13 | 6853 |
| 1991-10-02 | 01:24 | 01:25 | 3 | M1.0 | S21E03 | 6853 |
| 1991-10-02 | 18:15 | 18:17 | 27 | C4.5 | S18W10 | 6853 |
| 1991-10-03 | 01:41 | 01:43 | 52 | M1.2 | S20W09 | 6853 |
| 1991-10-03 | 13:14 | 13:19 | 59 | C7.9 | S17W18 | 6853 |
| 1991-10-03 | 23:59 | 00:47 | 94 | M1.1 | – | 6853 |
| 1991-10-04 | 09:33 | 09:44 | 31 | M1.2 | S18W30 | 6853 |
| 1991-10-05 | 01:40 | 02:18 | 63 | C6.3 | S19W41 | 6853 |
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 6853 produced 25 C+ flares between 1991-09-26 and 1991-10-05.