Top 50 geomagnetic storms of 1998

On this page you will find an overview of the strongest geomagnetic storms of 1998 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	Speed	IMF Bt	IMF Bz
1	1998/09/25	-207nT	117	8+	870.0km/sec	35.84nT	-23.28nT
2	1998/05/04	-205nT	101	9-	895.7km/sec	44.69nT	-37.03nT
3	1998/08/27	-155nT	144	8	805.3km/sec	17.38nT	-16.06nT
4	1998/11/08	-149nT	66	8-	651.0km/sec	37.57nT	-26.65nT
5	1998/11/09	-142nT	75	7-	521.1km/sec	22.56nT	-16.33nT
6	1998/08/06	-138nT	64	7+	436.2km/sec	21.73nT	-21.62nT
7	1998/11/13	-131nT	64	6	428.4km/sec	20.78nT	-18.45nT
8	1998/05/05	-119nT	42	7-	768.2km/sec	16.98nT	-14.91nT
9	1998/03/10	-116nT	53	7+	568.5km/sec	23.72nT	-18.18nT
10	1998/10/19	-112nT	62	7-	441.4km/sec	27.56nT	-21.61nT
11	1998/11/14	-109nT	41	6-	464.7km/sec	23.44nT	-19.70nT
12	1998/08/07	-108nT	24	6	532.3km/sec	17.49nT	-12.73nT
13	1998/03/11	-107nT	28	5+	579.8km/sec	9.94nT	-6.11nT
14	1998/06/26	-101nT	42	6+	509.5km/sec	14.99nT	-14.18nT
15	1998/02/18	-100nT	36	7-	446.9km/sec	22.96nT	-16.91nT
16	1998/02/17	-95nT	18	6-	426.4km/sec	18.66nT	-18.00nT
17	1998/11/10	-93nT	6	4-	470.9km/sec	11.00nT	-6.58nT
18	1998/03/21	-85nT	35	6+	629.5km/sec	17.40nT	-14.67nT
19	1998/05/02	-85nT	63	7-	684.1km/sec	21.30nT	-13.75nT
20	1998/08/28	-84nT	30	5	655.5km/sec	11.23nT	-7.10nT
21	1998/11/07	-81nT	26	5	542.4km/sec	15.82nT	-12.91nT
22	1998/01/07	-77nT	28	6+	-	-	-
23	1998/09/26	-75nT	17	4+	636.7km/sec	11.78nT	-8.49nT
24	1998/05/06	-72nT	5	2+	730.4km/sec	10.51nT	-5.29nT
25	1998/10/20	-71nT	22	5	602.3km/sec	13.80nT	-9.34nT
26	1998/08/26	-71nT	49	6+	889.2km/sec	27.21nT	-14.25nT
27	1998/10/21	-70nT	23	5-	625.6km/sec	8.58nT	-7.00nT
28	1998/10/07	-70nT	28	6-	612.4km/sec	15.04nT	-14.27nT
29	1998/05/03	-70nT	62	6	526.0km/sec	11.69nT	-9.37nT
30	1998/12/11	-69nT	33	5+	433.1km/sec	17.63nT	-13.91nT
31	1998/04/24	-69nT	35	6-	481.4km/sec	14.36nT	-12.87nT
32	1998/08/20	-67nT	17	4	370.8km/sec	17.47nT	-11.82nT
33	1998/08/29	-65nT	20	5+	613.3km/sec	6.30nT	-5.32nT
34	1998/04/26	-63nT	31	5	538.5km/sec	10.87nT	-9.52nT
35	1998/05/09	-63nT	13	4-	592.6km/sec	7.06nT	-6.69nT
36	1998/03/12	-62nT	14	4-	561.9km/sec	7.14nT	-5.92nT
37	1998/10/08	-62nT	15	4+	588.4km/sec	8.87nT	-5.93nT
38	1998/11/06	-61nT	20	4+	435.7km/sec	9.45nT	-9.22nT
39	1998/08/31	-60nT	17	4	567.0km/sec	7.24nT	-7.08nT
40	1998/12/29	-58nT	22	5	436.4km/sec	12.03nT	-10.82nT
41	1998/07/16	-58nT	37	6	660.4km/sec	24.44nT	-17.69nT
42	1998/03/15	-58nT	20	5	434.0km/sec	7.69nT	-7.15nT
43	1998/10/01	-58nT	24	5+	624.3km/sec	12.21nT	-8.44nT
44	1998/09/27	-57nT	10	3+	609.0km/sec	7.45nT	-5.35nT
45	1998/12/25	-57nT	12	4	597.2km/sec	21.88nT	-13.37nT
46	1998/10/02	-56nT	32	5+	717.7km/sec	19.89nT	-8.82nT
47	1998/05/08	-56nT	23	4+	677.6km/sec	13.25nT	-8.33nT
48	1998/03/25	-56nT	16	5-	424.2km/sec	11.06nT	-9.45nT
49	1998/08/30	-56nT	15	4-	633.1km/sec	5.96nT	-4.87nT
50	1998/10/03	-56nT	14	4+	644.6km/sec	5.72nT	-4.85nT

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