Home › Flare history › Region ranking
Solar flares from active region 6786
C17
M5
X0
LargestM6.71991-08-16
Span9 days
Flares by day
4
1
6
2
2
2
2
3
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-08-16 | 00:44 | 00:51 | 81 | M1.9 | S10E65 | 6786 |
| 1991-08-16 | 06:11 | 06:20 | 60 | M6.7 | S10E65 | 6786 |
| 1991-08-16 | 18:02 | 18:10 | 27 | C9.8 | S10E56 | 6786 |
| 1991-08-16 | 18:51 | 19:05 | 22 | C7.3 | S08E59 | 6786 |
| 1991-08-17 | 22:06 | 22:06 | 22 | C4.7 | S11E30 | 6786 |
| 1991-08-18 | 02:39 | 02:45 | 21 | C2.6 | S06E32 | 6786 |
| 1991-08-18 | 03:17 | 03:22 | 17 | C3.3 | S06E31 | 6786 |
| 1991-08-18 | 06:08 | 06:16 | 33 | C3.9 | S08E34 | 6786 |
| 1991-08-18 | 10:18 | 10:25 | 26 | C3.7 | S09E31 | 6786 |
| 1991-08-18 | 15:34 | 15:40 | 40 | C8.2 | S09E28 | 6786 |
| 1991-08-18 | 20:06 | 20:13 | 10 | C4.8 | S08E26 | 6786 |
| 1991-08-19 | 06:57 | 06:59 | 8 | C5.1 | S09E18 | 6786 |
| 1991-08-19 | 18:04 | 18:06 | 10 | C2.6 | S08E14 | 6786 |
| 1991-08-20 | 04:03 | 04:05 | 4 | C2.3 | S09E07 | 6786 |
| 1991-08-20 | 15:43 | 15:44 | 13 | C2.5 | S09W00 | 6786 |
| 1991-08-22 | 05:48 | 05:52 | 35 | M1.3 | S12W23 | 6786 |
| 1991-08-22 | 22:27 | 22:29 | 30 | M2.9 | S11W27 | 6786 |
| 1991-08-23 | 02:40 | 02:50 | 49 | C5.4 | S10W30 | 6786 |
| 1991-08-23 | 19:35 | 19:37 | 41 | C5.1 | S12W40 | 6786 |
| 1991-08-24 | 00:32 | 00:34 | 38 | M1.2 | S10W42 | 6786 |
| 1991-08-24 | 11:00 | 11:00 | 32 | C4.4 | S13W49 | 6786 |
| 1991-08-24 | 13:52 | 13:56 | 13 | C3.7 | S11W50 | 6786 |
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 6786 produced 22 C+ flares between 1991-08-16 and 1991-08-24.