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Solar flares from active region 3390

C47

M11

LargestX3.61981-10-07

Span13 days

Flares by day

1981-10-072

1981-10-082

1981-10-098

1981-10-1010

1981-10-1211

1981-10-135

1981-10-148

1981-10-155

1981-10-163

1981-10-172

1981-10-182

1981-10-192

All flares

Date	Begin	Peak	Min	Class	Location	Region
1981-10-07	12:31	12:38	17	C8.5	–	3390
1981-10-07	22:57	23:15	41	X3.6	S19E88	3390
1981-10-08	01:39	01:43	17	M1.3	S20E85	3390
1981-10-08	02:27	02:29	8	M1.2	S18E85	3390
1981-10-09	03:01	03:05	22	C2.0	S20E64	3390
1981-10-09	12:36	13:06	83	C4.8	S18E59	3390
1981-10-09	15:28	15:32	38	C2.7	S20E59	3390
1981-10-09	18:26	18:32	9	C2.5	–	3390
1981-10-09	18:33	21:18	179	C2.6	S20E55	3390
1981-10-09	21:17	21:18	15	C5.2	S16E63	3390
1981-10-09	21:33	21:58	142	C2.6	S20E54	3390
1981-10-09	22:16	22:52	67	C2.0	S19E54	3390
1981-10-10	01:22	01:24	24	C2.0	S21E51	3390
1981-10-10	05:28	05:52	38	C9.3	S21E48	3390
1981-10-10	07:50	08:08	64	C4.1	S21E48	3390
1981-10-10	09:07	09:40	38	C9.5	S21E48	3390
1981-10-10	11:32	14:27	280	M1.9	S20E44	3390
1981-10-10	14:02	14:05	9	C5.2	–	3390
1981-10-10	14:20	14:26	20	M1.9	–	3390
1981-10-10	17:38	17:38	14	C2.5	S20E43	3390
1981-10-10	23:00	23:06	11	C4.0	S18E50	3390
1981-10-10	23:50	23:55	10	C5.0	S18E50	3390
1981-10-12	01:28	03:14	127	C2.5	S18E32	3390
1981-10-12	02:25	02:31	25	C9.1	–	3390
1981-10-12	03:10	03:14	11	C9.3	–	3390
1981-10-12	04:06	04:10	12	C5.4	S18E31	3390
1981-10-12	04:51	04:56	11	C8.5	S18E31	3390
1981-10-12	06:22	06:36	55	X3.1	–	3390
1981-10-12	10:37	11:01	51	M9.2	S16E32	3390
1981-10-12	11:47	13:21	476	M1.1	S16E24	3390
1981-10-12	17:10	17:11	102	C4.5	S20E20	3390
1981-10-12	18:27	18:50	34	C4.6	S15E20	3390
1981-10-12	22:09	22:17	15	C9.5	–	3390
1981-10-13	00:09	00:13	30	C4.1	S16E17	3390
1981-10-13	01:08	01:10	7	C4.9	S18E20	3390
1981-10-13	07:08	07:13	17	M3.2	S13E15	3390
1981-10-13	13:59	14:01	4	C2.9	S17E11	3390
1981-10-13	18:11	18:11	63	M3.7	S13E11	3390
1981-10-14	01:19	01:39	24	C2.7	S17E04	3390
1981-10-14	01:32	01:36	6	C4.8	–	3390
1981-10-14	04:00	04:24	25	C3.0	S16E01	3390
1981-10-14	04:19	04:24	25	M1.8	–	3390
1981-10-14	06:29	06:33	8	C4.1	S18E04	3390
1981-10-14	09:23	09:24	17	C4.7	S17W01	3390
1981-10-14	13:05	13:06	38	C6.3	S16W01	3390
1981-10-14	19:23	19:26	6	C6.1	S16W05	3390
1981-10-15	06:37	06:39	17	C9.9	S17W12	3390
1981-10-15	07:14	07:22	74	C9.1	S19W04	3390
1981-10-15	09:01	09:02	13	C7.5	S20W16	3390
1981-10-15	20:05	20:19	71	C4.3	S20W22	3390
1981-10-15	20:16	20:21	11	C5.3	–	3390
1981-10-16	02:53	03:55	75	C9.4	S17W22	3390
1981-10-16	12:23	12:25	64	M1.3	S16W23	3390
1981-10-16	17:19	17:21	33	C2.1	S18W35	3390
1981-10-17	07:36	07:39	18	C6.3	S16W47	3390
1981-10-17	17:46	18:04	29	C4.9	–	3390
1981-10-18	02:06	02:07	12	C2.0	S18W43	3390
1981-10-18	10:59	11:32	102	M2.1	–	3390
1981-10-19	00:35	00:37	16	C1.7	S15W60	3390
1981-10-19	02:31	02:35	12	C6.5	–	3390

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 3390 produced 60 C+ flares between 1981-10-07 and 1981-10-19.