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Solar flares from active region 2971
C24
M5
X0
LargestM2.21981-03-13
Span9 days
Flares by day
4
6
2
2
1
4
4
2
4
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-03-08 | 01:47 | 02:09 | 80 | C7.3 | N10E53 | 2971 |
| 1981-03-08 | 16:25 | 16:29 | 47 | C2.6 | N05E45 | 2971 |
| 1981-03-08 | 18:53 | 18:59 | 43 | C5.2 | N08E43 | 2971 |
| 1981-03-08 | 21:07 | 21:21 | 117 | C3.4 | N04E37 | 2971 |
| 1981-03-09 | 00:05 | 00:14 | 27 | C2.1 | N04E35 | 2971 |
| 1981-03-09 | 01:45 | 01:53 | 12 | C1.9 | N07E41 | 2971 |
| 1981-03-09 | 06:12 | 06:14 | 13 | C2.2 | N07E33 | 2971 |
| 1981-03-09 | 18:08 | 18:14 | 16 | C1.8 | N09E31 | 2971 |
| 1981-03-09 | 18:40 | 18:53 | 132 | M1.1 | N13E28 | 2971 |
| 1981-03-09 | 21:58 | 22:00 | 11 | C2.4 | N09E24 | 2971 |
| 1981-03-10 | 02:43 | 02:48 | 14 | C2.4 | N06E28 | 2971 |
| 1981-03-10 | 08:33 | 08:34 | 15 | C4.4 | N06E24 | 2971 |
| 1981-03-11 | 17:07 | 17:08 | 46 | C2.4 | N05E01 | 2971 |
| 1981-03-11 | 22:37 | 22:45 | 19 | C2.3 | N04E03 | 2971 |
| 1981-03-12 | 17:50 | 17:56 | 57 | C7.2 | N12W09 | 2971 |
| 1981-03-13 | 18:10 | 18:36 | 47 | C5.1 | N08E24 | 2971 |
| 1981-03-13 | 19:32 | 19:38 | 18 | C4.4 | N09W24 | 2971 |
| 1981-03-13 | 20:39 | 21:01 | 58 | M1.3 | N12W25 | 2971 |
| 1981-03-13 | 23:08 | 23:30 | 43 | M2.2 | – | 2971 |
| 1981-03-14 | 06:48 | 06:52 | 12 | C3.2 | N08W27 | 2971 |
| 1981-03-14 | 17:59 | 18:05 | 21 | C2.1 | N09W34 | 2971 |
| 1981-03-14 | 18:32 | 18:45 | 24 | C3.5 | N09W35 | 2971 |
| 1981-03-14 | 23:46 | 23:48 | 14 | M1.8 | N09W38 | 2971 |
| 1981-03-15 | 01:27 | 01:33 | 33 | C4.0 | N08W42 | 2971 |
| 1981-03-15 | 14:10 | 14:17 | 13 | M1.1 | N08W47 | 2971 |
| 1981-03-16 | 01:48 | 01:50 | 11 | C4.9 | N08W53 | 2971 |
| 1981-03-16 | 05:34 | 05:45 | 33 | C6.4 | N07W58 | 2971 |
| 1981-03-16 | 12:59 | 13:04 | 15 | C6.1 | N08W65 | 2971 |
| 1981-03-16 | 21:50 | 22:08 | 32 | C5.2 | N08W63 | 2971 |
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 2971 produced 29 C+ flares between 1981-03-08 and 1981-03-16.