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Solar flares from active region 6399
C10
M4
X0
LargestM5.11990-12-12
Span11 days
Flares by day
1
3
2
7
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1990-12-03 | 18:25 | 18:26 | 24 | C1.7 | N22E45 | 6399 |
| 1990-12-10 | 14:45 | 14:46 | 47 | C2.5 | N21W50 | 6399 |
| 1990-12-10 | 17:49 | 17:59 | 39 | C6.8 | N21W52 | 6399 |
| 1990-12-10 | 23:39 | 23:42 | 47 | C5.7 | N20W56 | 6399 |
| 1990-12-11 | 02:52 | 03:10 | 42 | C5.4 | N21W56 | 6399 |
| 1990-12-11 | 06:21 | 06:30 | 28 | C4.3 | N20W60 | 6399 |
| 1990-12-12 | 02:53 | 02:59 | 15 | C4.0 | N23W69 | 6399 |
| 1990-12-12 | 03:24 | 03:26 | 68 | M1.7 | N23W68 | 6399 |
| 1990-12-12 | 06:25 | 07:03 | 58 | M1.6 | N20W73 | 6399 |
| 1990-12-12 | 07:55 | 08:03 | 64 | M5.1 | N20W73 | 6399 |
| 1990-12-12 | 08:49 | 08:58 | 19 | C8.2 | N20W71 | 6399 |
| 1990-12-12 | 10:58 | 11:02 | 63 | M1.6 | N19W74 | 6399 |
| 1990-12-12 | 15:08 | – | 81 | C4.7 | N22W75 | 6399 |
| 1990-12-13 | 04:08 | 04:12 | 17 | C6.6 | N22W84 | 6399 |
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 6399 produced 14 C+ flares between 1990-12-03 and 1990-12-13.