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Solar flares from active region 4647
C24
M2
X1
LargestX1.91985-04-24
Span12 days
Flares by day
1
6
3
7
3
2
1
1
1
1
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1985-04-21 | 16:16 | 16:24 | 29 | C2.1 | N04E62 | 4647 |
| 1985-04-22 | 03:51 | 03:52 | 12 | C2.4 | N02E54 | 4647 |
| 1985-04-22 | 05:39 | 05:47 | 13 | C1.1 | – | 4647 |
| 1985-04-22 | 09:03 | 09:05 | 11 | C2.1 | N06E56 | 4647 |
| 1985-04-22 | 16:37 | 16:40 | 12 | M1.0 | N05E49 | 4647 |
| 1985-04-22 | 17:01 | 17:03 | 29 | C2.1 | N05E47 | 4647 |
| 1985-04-22 | 21:29 | 21:33 | 8 | C1.0 | – | 4647 |
| 1985-04-23 | 02:51 | 02:51 | 8 | C1.1 | N06E41 | 4647 |
| 1985-04-23 | 10:17 | 10:38 | 29 | C2.2 | N03E40 | 4647 |
| 1985-04-23 | 21:08 | 21:10 | 16 | C5.5 | N04E30 | 4647 |
| 1985-04-24 | 01:48 | 01:59 | 41 | C8.8 | N03E28 | 4647 |
| 1985-04-24 | 03:46 | 03:53 | 32 | C2.2 | N04E26 | 4647 |
| 1985-04-24 | 04:49 | 04:51 | 42 | C7.4 | N05E26 | 4647 |
| 1985-04-24 | 09:14 | 09:22 | 96 | X1.9 | N06E27 | 4647 |
| 1985-04-24 | 16:00 | 16:48 | 104 | C1.2 | N04E20 | 4647 |
| 1985-04-24 | 16:42 | 17:02 | 43 | C5.4 | – | 4647 |
| 1985-04-24 | 19:35 | 20:58 | 101 | C1.9 | N04E18 | 4647 |
| 1985-04-25 | 02:28 | 02:30 | 18 | C1.0 | N04E14 | 4647 |
| 1985-04-25 | 07:25 | 07:29 | 44 | C4.2 | N05E11 | 4647 |
| 1985-04-25 | 19:06 | 20:46 | 148 | C1.9 | N06E03 | 4647 |
| 1985-04-26 | 00:24 | 00:25 | 11 | C1.9 | N05E02 | 4647 |
| 1985-04-26 | 03:26 | 03:28 | 8 | C1.4 | N04E01 | 4647 |
| 1985-04-27 | 20:03 | 20:13 | 51 | C1.0 | N03W23 | 4647 |
| 1985-04-29 | 18:01 | 18:05 | 14 | C1.9 | N02W53 | 4647 |
| 1985-04-30 | 23:33 | 23:45 | 36 | C2.0 | N05W64 | 4647 |
| 1985-05-01 | 14:30 | 14:31 | 21 | C2.7 | N03W73 | 4647 |
| 1985-05-02 | 07:41 | 07:45 | 12 | M4.9 | – | 4647 |
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 4647 produced 27 C+ flares between 1985-04-21 and 1985-05-02.