Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 6749
C6
M2
X1
LargestX2.31991-07-31
Span9 days
Flares by day
2
1
3
1
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-07-27 | 15:03 | 15:04 | 6 | C1.7 | S16E55 | 6749 |
| 1991-07-27 | 21:04 | 21:15 | 25 | C1.5 | S17E50 | 6749 |
| 1991-07-29 | 15:12 | 15:25 | 36 | M1.0 | S17E28 | 6749 |
| 1991-07-31 | 00:46 | 00:53 | 89 | X2.3 | S17E11 | 6749 |
| 1991-07-31 | 10:04 | 10:13 | 54 | C6.1 | S16E05 | 6749 |
| 1991-07-31 | 14:28 | 14:32 | 24 | C3.7 | S17E02 | 6749 |
| 1991-08-01 | 15:10 | 15:21 | 70 | M4.0 | S16W10 | 6749 |
| 1991-08-04 | 15:07 | 15:19 | 43 | C2.2 | S18W49 | 6749 |
| 1991-08-04 | 21:46 | 21:47 | 3 | C4.2 | S19W54 | 6749 |
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 6749 produced 9 C+ flares between 1991-07-27 and 1991-08-04.