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Solar flares from active region 2958
C11
M6
X3
LargestX4.01981-02-26
Span10 days
Flares by day
5
4
3
3
1
3
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-02-24 | 00:13 | 00:15 | 19 | M5.2 | S16E81 | 2958 |
| 1981-02-24 | 07:59 | 08:03 | 16 | C8.6 | S13E83 | 2958 |
| 1981-02-24 | 18:01 | 18:22 | 72 | M1.1 | S19E75 | 2958 |
| 1981-02-24 | 19:31 | 19:37 | 98 | X1.4 | S14E72 | 2958 |
| 1981-02-24 | 23:00 | 23:02 | 10 | C7.0 | S20E72 | 2958 |
| 1981-02-25 | 02:02 | 02:05 | 10 | C7.8 | – | 2958 |
| 1981-02-25 | 02:38 | 02:45 | 35 | M2.9 | S16E78 | 2958 |
| 1981-02-25 | 07:06 | 07:10 | 14 | C3.3 | S12E71 | 2958 |
| 1981-02-25 | 09:00 | 09:07 | 19 | C2.3 | S17E71 | 2958 |
| 1981-02-26 | 14:21 | 14:26 | 17 | X1.8 | S12E53 | 2958 |
| 1981-02-26 | 19:22 | 19:53 | 41 | X4.0 | S15E50 | 2958 |
| 1981-02-26 | 23:33 | 23:33 | 21 | M1.2 | S14E44 | 2958 |
| 1981-02-27 | 01:30 | 01:33 | 22 | M1.1 | S14E45 | 2958 |
| 1981-02-27 | 04:58 | 04:58 | 4 | C4.3 | S15E43 | 2958 |
| 1981-02-27 | 23:02 | 23:09 | 34 | M1.4 | S18W39 | 2958 |
| 1981-02-28 | 05:35 | 05:36 | 20 | C2.7 | S14E33 | 2958 |
| 1981-03-02 | 00:51 | 00:51 | 8 | C2.4 | S18E12 | 2958 |
| 1981-03-02 | 04:51 | 04:52 | 9 | C2.2 | S17E09 | 2958 |
| 1981-03-02 | 22:20 | 22:23 | 17 | C6.0 | S09W05 | 2958 |
| 1981-03-05 | 04:32 | 04:49 | 65 | C8.1 | S11W31 | 2958 |
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 2958 produced 20 C+ flares between 1981-02-24 and 1981-03-05.