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Solar flares from active region 6397
C17
M6
X0
LargestM6.61990-12-04
Span11 days
Flares by day
4
7
4
2
2
1
1
1
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1990-12-03 | 19:20 | 19:22 | 24 | M1.0 | N11E66 | 6397 |
| 1990-12-03 | 19:54 | 20:19 | 48 | C3.9 | N08E65 | 6397 |
| 1990-12-03 | 21:49 | 21:49 | 10 | C1.3 | N12E67 | 6397 |
| 1990-12-03 | 22:51 | 22:51 | 14 | C1.7 | N08E58 | 6397 |
| 1990-12-04 | 01:58 | 02:02 | 48 | M6.6 | N08E56 | 6397 |
| 1990-12-04 | 03:31 | 03:31 | 6 | C1.2 | N10E62 | 6397 |
| 1990-12-04 | 04:06 | 04:15 | 15 | C1.6 | N08E54 | 6397 |
| 1990-12-04 | 07:33 | 07:35 | 10 | C4.3 | N10E58 | 6397 |
| 1990-12-04 | 12:46 | 12:52 | 33 | C1.8 | N10E55 | 6397 |
| 1990-12-04 | 14:20 | 14:35 | 87 | M1.8 | N08E51 | 6397 |
| 1990-12-04 | 16:04 | 16:11 | 47 | C1.7 | N10E37 | 6397 |
| 1990-12-05 | 00:53 | 00:55 | 11 | C1.9 | N10E44 | 6397 |
| 1990-12-05 | 05:36 | 05:39 | 11 | C3.3 | N10E42 | 6397 |
| 1990-12-05 | 07:22 | 07:26 | 58 | M2.7 | N08E43 | 6397 |
| 1990-12-05 | 20:54 | 21:14 | 66 | C8.9 | N10E32 | 6397 |
| 1990-12-06 | 06:28 | 06:30 | 15 | C4.5 | N10E28 | 6397 |
| 1990-12-06 | 16:10 | – | 23 | C3.5 | N11E24 | 6397 |
| 1990-12-07 | 04:25 | 04:28 | 15 | C3.4 | N09E20 | 6397 |
| 1990-12-07 | 14:08 | 14:10 | 28 | M1.0 | N09E16 | 6397 |
| 1990-12-08 | 09:56 | 10:02 | 29 | C4.9 | N09E02 | 6397 |
| 1990-12-09 | 09:21 | 09:26 | 42 | M1.0 | N09W11 | 6397 |
| 1990-12-10 | 15:15 | 15:21 | 21 | C3.7 | N09W28 | 6397 |
| 1990-12-13 | 06:10 | 06:12 | 8 | C3.2 | N08W65 | 6397 |
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 6397 produced 23 C+ flares between 1990-12-03 and 1990-12-13.