Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 3099
C22
M7
X0
LargestM2.91981-05-11
Span9 days
Flares by day
2
3
3
3
8
1
3
4
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-05-07 | 14:02 | 14:30 | 85 | C3.1 | N07E56 | 3099 |
| 1981-05-07 | 15:04 | 15:32 | 30 | C2.4 | – | 3099 |
| 1981-05-08 | 00:08 | 00:10 | 16 | C2.1 | N07E52 | 3099 |
| 1981-05-08 | 16:13 | 16:17 | 23 | C2.4 | N04E39 | 3099 |
| 1981-05-08 | 22:50 | 22:51 | 30 | M1.7 | N09E37 | 3099 |
| 1981-05-09 | 21:42 | 22:10 | 63 | C3.6 | N11E22 | 3099 |
| 1981-05-09 | 22:03 | 22:11 | 22 | M1.9 | – | 3099 |
| 1981-05-09 | 22:56 | 22:58 | 60 | M1.1 | N09E22 | 3099 |
| 1981-05-10 | 04:59 | 05:07 | 49 | M1.2 | N09E20 | 3099 |
| 1981-05-10 | 19:30 | 19:38 | 20 | C7.0 | N11E10 | 3099 |
| 1981-05-10 | 23:17 | 23:20 | 42 | C3.8 | N08E10 | 3099 |
| 1981-05-11 | 02:15 | 05:48 | 260 | C4.0 | N10E08 | 3099 |
| 1981-05-11 | 03:00 | 05:25 | 210 | C2.8 | N09E04 | 3099 |
| 1981-05-11 | 05:17 | 05:22 | 10 | C8.9 | – | 3099 |
| 1981-05-11 | 05:46 | 05:48 | 7 | M2.9 | N10E04 | 3099 |
| 1981-05-11 | 07:51 | 07:52 | 5 | C3.0 | N10E01 | 3099 |
| 1981-05-11 | 12:58 | 13:04 | 20 | C2.3 | N10W00 | 3099 |
| 1981-05-11 | 15:12 | 16:12 | 118 | C7.8 | N11W02 | 3099 |
| 1981-05-11 | 15:55 | 16:08 | 19 | M2.0 | – | 3099 |
| 1981-05-12 | 00:23 | 01:10 | 116 | C6.8 | N10W07 | 3099 |
| 1981-05-13 | 14:44 | 14:44 | 10 | C3.7 | N08W26 | 3099 |
| 1981-05-13 | 16:10 | 16:12 | 11 | C3.0 | N10W26 | 3099 |
| 1981-05-13 | 23:24 | 23:26 | 20 | C5.4 | N10W29 | 3099 |
| 1981-05-14 | 03:15 | 03:15 | 10 | M1.4 | N11W33 | 3099 |
| 1981-05-14 | 13:52 | 13:53 | 91 | C2.1 | N11W39 | 3099 |
| 1981-05-14 | 16:35 | 16:55 | 27 | C1.7 | N10W40 | 3099 |
| 1981-05-14 | 21:23 | 21:25 | 41 | C5.9 | N10W46 | 3099 |
| 1981-05-15 | 01:55 | 02:12 | 28 | C2.1 | N10W45 | 3099 |
| 1981-05-15 | 02:29 | 02:32 | 20 | C2.6 | N10W45 | 3099 |
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 3099 produced 29 C+ flares between 1981-05-07 and 1981-05-15.