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Solar flares from active region 6583
C16
M7
X1
LargestX1.01991-04-20
Span11 days
Flares by day
4
2
1
2
4
5
3
1
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-04-10 | 03:23 | 03:41 | 39 | M1.3 | N09E79 | 6583 |
| 1991-04-10 | 12:37 | 12:52 | 136 | C6.0 | N12E79 | 6583 |
| 1991-04-10 | 20:17 | 20:17 | 25 | M1.9 | N11E77 | 6583 |
| 1991-04-10 | 21:19 | 21:31 | 29 | C9.6 | N09E77 | 6583 |
| 1991-04-11 | 05:42 | 06:12 | 64 | M4.9 | N10E68 | 6583 |
| 1991-04-11 | 08:23 | 08:42 | 91 | M2.4 | N09E66 | 6583 |
| 1991-04-13 | 05:19 | 05:21 | 12 | C9.2 | N09E40 | 6583 |
| 1991-04-14 | 19:21 | 19:24 | 11 | C3.0 | N10E25 | 6583 |
| 1991-04-14 | 23:29 | 23:35 | 29 | C4.5 | N06E20 | 6583 |
| 1991-04-15 | 03:49 | 03:58 | 36 | C6.4 | N06E16 | 6583 |
| 1991-04-15 | 11:55 | 11:59 | 8 | C8.3 | N06E10 | 6583 |
| 1991-04-15 | 18:29 | 18:30 | 16 | C4.6 | N06E07 | 6583 |
| 1991-04-15 | 19:01 | 19:05 | 49 | M3.9 | N06E08 | 6583 |
| 1991-04-16 | 13:20 | 14:02 | 116 | M2.4 | N06W03 | 6583 |
| 1991-04-16 | 15:58 | 16:01 | 39 | M3.3 | N06W02 | 6583 |
| 1991-04-16 | 18:21 | 18:23 | 63 | C4.6 | N06W05 | 6583 |
| 1991-04-16 | 20:22 | 20:22 | 15 | C5.1 | N08W04 | 6583 |
| 1991-04-16 | 22:17 | 22:24 | 27 | C8.3 | N08W06 | 6583 |
| 1991-04-18 | 15:06 | 15:06 | 12 | C3.1 | N06W28 | 6583 |
| 1991-04-18 | 17:36 | 17:53 | 41 | C2.8 | N08W32 | 6583 |
| 1991-04-18 | 21:41 | 21:41 | 15 | C2.0 | N04W33 | 6583 |
| 1991-04-19 | 00:55 | 01:09 | 42 | C3.0 | N05W34 | 6583 |
| 1991-04-20 | 02:39 | 02:40 | 8 | C3.7 | N06W52 | 6583 |
| 1991-04-20 | 08:27 | 08:52 | 177 | X1.0 | N08W50 | 6583 |
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 6583 produced 24 C+ flares between 1991-04-10 and 1991-04-20.