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Solar flares from active region 6879
C13
M4
X0
LargestM6.01991-10-13
Span9 days
Flares by day
4
6
3
1
1
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-10-13 | 06:57 | 06:59 | 15 | C7.3 | N21E86 | 6879 |
| 1991-10-13 | 18:10 | 18:16 | 91 | M6.0 | N22E82 | 6879 |
| 1991-10-13 | 20:10 | 20:13 | 62 | M1.1 | N23E79 | 6879 |
| 1991-10-13 | 21:12 | 21:13 | 15 | M1.6 | N22E80 | 6879 |
| 1991-10-14 | 02:47 | 02:48 | 8 | C3.1 | N21E76 | 6879 |
| 1991-10-14 | 03:18 | 03:20 | 38 | M1.3 | N21E76 | 6879 |
| 1991-10-14 | 04:02 | 04:03 | 13 | C8.9 | N21E77 | 6879 |
| 1991-10-14 | 09:16 | 09:19 | 16 | C6.7 | N23E71 | 6879 |
| 1991-10-14 | 14:09 | 14:49 | 64 | C6.1 | N21E69 | 6879 |
| 1991-10-14 | 21:12 | 21:19 | 11 | C5.2 | N22E66 | 6879 |
| 1991-10-15 | 01:08 | 01:12 | 16 | C2.9 | N23E65 | 6879 |
| 1991-10-15 | 02:47 | 02:48 | 4 | C2.7 | N21E65 | 6879 |
| 1991-10-15 | 03:12 | 03:17 | 18 | C2.3 | N23E60 | 6879 |
| 1991-10-16 | 13:09 | 13:11 | 11 | C1.3 | N21E46 | 6879 |
| 1991-10-17 | 01:16 | 01:17 | 10 | C1.4 | N19E36 | 6879 |
| 1991-10-21 | 06:31 | 06:32 | 29 | C2.1 | N22W16 | 6879 |
| 1991-10-21 | 19:03 | 19:16 | 48 | C3.4 | N22W23 | 6879 |
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 6879 produced 17 C+ flares between 1991-10-13 and 1991-10-21.