Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 6558
C8
M3
X0
LargestM3.21991-03-24
Span10 days
Flares by day
1
2
3
3
1
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-03-23 | 10:46 | 10:52 | 62 | M1.3 | S10E54 | 6558 |
| 1991-03-24 | 02:39 | 02:44 | 102 | M3.2 | S15E51 | 6558 |
| 1991-03-24 | 19:38 | 19:42 | 41 | M1.4 | S14E42 | 6558 |
| 1991-03-25 | 03:27 | 03:32 | 15 | C3.7 | S13E37 | 6558 |
| 1991-03-25 | 04:10 | 04:13 | 8 | C2.8 | S13E37 | 6558 |
| 1991-03-25 | 13:37 | 13:39 | 18 | C1.8 | S15E36 | 6558 |
| 1991-03-26 | 03:55 | 04:04 | 23 | C2.2 | S14E24 | 6558 |
| 1991-03-26 | 14:09 | 14:16 | 9 | C3.2 | S11E20 | 6558 |
| 1991-03-26 | 22:02 | 22:09 | 21 | C2.3 | S14E14 | 6558 |
| 1991-03-27 | 14:51 | 14:56 | 37 | C2.0 | S12E08 | 6558 |
| 1991-04-01 | 06:18 | 06:56 | 129 | C5.1 | S12W58 | 6558 |
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 6558 produced 11 C+ flares between 1991-03-23 and 1991-04-01.