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Solar flares from active region 3204
C18
M4
X1
LargestX2.71981-07-19
Span11 days
Flares by day
1
6
6
2
2
1
1
2
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1981-07-10 | 15:35 | 15:47 | 55 | C7.8 | S29E52 | 3204 |
| 1981-07-11 | 02:10 | 02:12 | 11 | C3.1 | S30E53 | 3204 |
| 1981-07-11 | 05:09 | 05:18 | 36 | C6.5 | S28E48 | 3204 |
| 1981-07-11 | 13:02 | 13:40 | 70 | C7.1 | S29E45 | 3204 |
| 1981-07-11 | 16:36 | 16:38 | 21 | C2.3 | S28E44 | 3204 |
| 1981-07-11 | 17:53 | 18:09 | 64 | C2.4 | S29E41 | 3204 |
| 1981-07-11 | 22:38 | 22:42 | 7 | C2.1 | S30E40 | 3204 |
| 1981-07-12 | 00:29 | 00:38 | 12 | C2.0 | S30E39 | 3204 |
| 1981-07-12 | 02:35 | 03:16 | 79 | M1.1 | S28E34 | 3204 |
| 1981-07-12 | 04:17 | 04:47 | 39 | C2.1 | S30E37 | 3204 |
| 1981-07-12 | 05:54 | 06:03 | 16 | C4.2 | S30E36 | 3204 |
| 1981-07-12 | 07:23 | 07:28 | 12 | C2.1 | – | 3204 |
| 1981-07-12 | 12:08 | 12:09 | 25 | M1.1 | S28E38 | 3204 |
| 1981-07-15 | 02:48 | 02:50 | 34 | C2.3 | S32E00 | 3204 |
| 1981-07-15 | 21:35 | 21:46 | 17 | C2.0 | S29W07 | 3204 |
| 1981-07-16 | 02:14 | 02:14 | 10 | C2.9 | S19W14 | 3204 |
| 1981-07-16 | 16:35 | 16:42 | 43 | M1.4 | S28W24 | 3204 |
| 1981-07-17 | 07:39 | 08:13 | 44 | C2.5 | S30W31 | 3204 |
| 1981-07-18 | 00:02 | 00:23 | 34 | C2.3 | S24W41 | 3204 |
| 1981-07-19 | 05:32 | 05:34 | 65 | X2.7 | S37W56 | 3204 |
| 1981-07-19 | 16:52 | 16:53 | 7 | C2.7 | S27W63 | 3204 |
| 1981-07-20 | 12:10 | 12:20 | 34 | C3.9 | S28W75 | 3204 |
| 1981-07-20 | 13:10 | 13:22 | 91 | M5.4 | S26W75 | 3204 |
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 3204 produced 23 C+ flares between 1981-07-10 and 1981-07-20.