Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 2751
C11
M4
X1
LargestX3.91980-10-25
Span8 days
Flares by day
2
2
6
1
4
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1980-10-21 | 00:02 | 00:03 | 20 | C4.5 | N22W02 | 2751 |
| 1980-10-21 | 09:12 | 09:22 | 13 | C2.0 | N22W10 | 2751 |
| 1980-10-22 | 15:27 | 15:33 | 33 | C2.7 | N18W29 | 2751 |
| 1980-10-22 | 23:57 | 00:00 | 3 | M1.9 | – | 2751 |
| 1980-10-23 | 00:01 | 00:06 | 8 | M1.7 | N22W34 | 2751 |
| 1980-10-23 | 04:46 | 04:57 | 26 | C2.0 | N21W34 | 2751 |
| 1980-10-23 | 07:36 | 07:41 | 39 | M3.8 | N20W34 | 2751 |
| 1980-10-23 | 12:18 | 12:25 | 14 | C5.9 | – | 2751 |
| 1980-10-23 | 14:14 | 14:55 | 65 | C2.0 | N18W42 | 2751 |
| 1980-10-23 | 15:53 | 15:57 | 17 | C7.0 | N18W38 | 2751 |
| 1980-10-24 | 22:20 | 22:30 | 67 | C3.9 | N21W57 | 2751 |
| 1980-10-25 | 02:12 | 02:15 | 7 | C2.0 | – | 2751 |
| 1980-10-25 | 05:35 | 05:42 | 46 | M1.3 | N19W59 | 2751 |
| 1980-10-25 | 08:02 | 08:21 | 53 | C6.7 | N19W60 | 2751 |
| 1980-10-25 | 09:42 | 09:50 | 28 | X3.9 | N19W59 | 2751 |
| 1980-10-28 | 03:09 | 03:15 | 15 | C6.2 | – | 2751 |
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 2751 produced 16 C+ flares between 1980-10-21 and 1980-10-28.