Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 6311
C9
M3
X0
LargestM8.51990-10-20
Span14 days
Flares by day
1
1
1
1
3
1
2
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1990-10-08 | 16:51 | 16:52 | 13 | C3.4 | N16E67 | 6311 |
| 1990-10-11 | 20:14 | 20:14 | 9 | C1.4 | N15E33 | 6311 |
| 1990-10-12 | 13:17 | 13:23 | 18 | C1.1 | N13E21 | 6311 |
| 1990-10-13 | 17:38 | 18:33 | 140 | C1.8 | N15E05 | 6311 |
| 1990-10-15 | 01:50 | 01:52 | 16 | C6.7 | N13W12 | 6311 |
| 1990-10-15 | 12:28 | 12:50 | 56 | C5.7 | N14W22 | 6311 |
| 1990-10-15 | 23:52 | 23:58 | 11 | C3.3 | N13W27 | 6311 |
| 1990-10-19 | 13:50 | 14:03 | 28 | C4.9 | N12W70 | 6311 |
| 1990-10-20 | 04:52 | 05:02 | 26 | C8.4 | N18W79 | 6311 |
| 1990-10-20 | 17:59 | 18:10 | 22 | M8.5 | N15W82 | 6311 |
| 1990-10-21 | 03:13 | 03:21 | 17 | M1.0 | N16W92 | 6311 |
| 1990-10-21 | 05:56 | 05:59 | 60 | M3.0 | N14W89 | 6311 |
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 6311 produced 12 C+ flares between 1990-10-08 and 1990-10-21.