Top 50 geomagnetic storms of 1991

On this page you will find an overview of the strongest geomagnetic storms of 1991 together with links to more information in our archive. Storms are ranked by the Disturbance storm-time index (Dst) that is designed to measure the magnetic signature of magnetospheric currents observed in the equatorial regions. The Dst index is provided by the World Data Center for geomagnetism in Kyoto.

		Dst	Ap	Kp max
1	1991/11/09	-354nT	119	8+
2	1991/03/25	-298nT	130	9-
3	1991/03/24	-281nT	161	9-
4	1991/11/08	-280nT	98	9-
5	1991/10/29	-254nT	128	8+
6	1991/06/05	-223nT	196	9-
7	1991/10/28	-196nT	98	8+
8	1991/11/01	-196nT	109	8+
9	1991/07/09	-194nT	117	8
10	1991/11/02	-189nT	41	7
11	1991/07/13	-183nT	134	9-
12	1991/06/06	-172nT	49	7-
13	1991/08/19	-170nT	74	8-
14	1991/03/26	-168nT	114	8
15	1991/10/02	-164nT	67	6+
16	1991/07/14	-158nT	75	7-
17	1991/10/01	-157nT	54	7+
18	1991/11/10	-144nT	22	4
19	1991/08/20	-143nT	67	8-
20	1991/06/11	-140nT	88	7+
21	1991/11/22	-139nT	57	6+
22	1991/11/21	-135nT	65	7-
23	1991/06/10	-134nT	119	8-
24	1991/10/30	-132nT	34	6-
25	1991/11/19	-123nT	56	6+
26	1991/08/02	-114nT	52	6+
27	1991/06/13	-114nT	120	8-
28	1991/08/21	-112nT	41	6
29	1991/07/10	-109nT	19	5
30	1991/08/30	-107nT	49	6+
31	1991/05/17	-105nT	35	6
32	1991/07/15	-104nT	12	4+
33	1991/10/31	-104nT	59	7
34	1991/06/14	-101nT	8	3+
35	1991/03/27	-101nT	31	5-
36	1991/08/12	-99nT	64	7+
37	1991/04/29	-97nT	59	7-
38	1991/11/18	-97nT	30	5
39	1991/09/10	-96nT	37	6+
40	1991/08/04	-95nT	44	6
41	1991/10/27	-94nT	50	6+
42	1991/06/12	-94nT	66	7-
43	1991/10/21	-94nT	28	5
44	1991/07/17	-94nT	41	6-
45	1991/08/22	-92nT	48	7
46	1991/11/05	-92nT	27	6-
47	1991/11/20	-90nT	18	4
48	1991/08/06	-88nT	32	6
49	1991/09/01	-87nT	47	6
50	1991/08/31	-87nT	52	6

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