Solcykel 18 - Topp 50 geomagnetiska stormar

On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 18 together with links to more information in our archive. The Kp-values on this page are the official, finalized Kp-values from the GFZ in Potsdam, Germany. Times are in UTC.

		Ap	Kp max	00-03h	03-06h	06-09h	09-12h	12-15h	15-18h	18-21h	21-00h
1	1946/09/22	198	9	4-	8+	8-	9-	9	8+	7	6
2	1946/07/27	152	9	9-	9-	9	7-	5+	4-	4-	2+
3	1946/03/28	213	9-	5	6	8+	9-	9-	9-	8+	8
4	1946/03/25	195	9-	8-	7+	7+	8-	8+	9-	8-	8-
5	1949/01/25	156	9-	9-	8	7-	4+	5	6	8+	8+
6	1949/05/12	153	9-	2	2	7+	7+	8+	9-	8+	7
7	1946/02/08	118	9-	9-	8-	7+	7	6-	6-	4	3
8	1946/04/23	117	9-	4-	4	5+	6	6+	8-	8-	9-
9	1947/04/17	100	9-	4-	4-	2-	2-	6+	7-	9-	8+
10	1951/10/28	98	9-	0+	4-	3+	5+	7	8	9-	5
11	1946/07/26	79	9-	4-	4	3	4-	3+	3+	9-	8
12	1950/02/20	79	9-	2+	3-	2-	2+	3	5	9-	8+
13	1951/09/26	73	9-	9-	8-	4+	4-	3-	3+	2+	3-
14	1949/10/15	156	8+	6	6	7+	8	7+	7+	8+	8-
15	1948/03/15	140	8+	6-	8+	8	7+	6+	7	8-	5
16	1950/08/19	136	8+	6-	4+	6-	6+	8	8+	8-	8
17	1947/03/03	128	8+	7	5	7-	7	6+	6-	8+	8
18	1946/02/07	127	8+	4-	2	4	8+	8-	8	7	8
19	1951/09/25	116	8+	4-	5-	5-	5+	7+	8-	8	8+
20	1950/08/20	108	8+	8+	8	8-	8-	4	3+	2+	2
21	1949/01/26	100	8+	8+	8	7	6-	5	5	5-	4
22	1946/04/24	99	8+	8+	7+	7-	6+	4+	7-	5-	3+
23	1952/04/21	94	8+	3-	3+	4	4	8+	8	7	6+
24	1944/04/02	88	8+	4+	5	8	8+	6	4	5	4
25	1948/10/18	86	8+	8+	7-	5+	4-	4-	4	5+	7+
26	1944/12/16	83	8+	4	4-	4+	6	8	8+	5	3
27	1947/08/22	71	8+	3-	4	5	8+	6+	6	5-	4+
28	1948/10/17	35	8+	1	0+	3+	1+	0+	0+	2+	8+
29	1946/09/23	146	8	7+	8-	8	6+	7	8	6	7-
30	1946/03/24	117	8	8	8-	5	6-	7+	8	3+	5+
31	1952/03/06	82	8	8	7+	6+	5-	4+	4	5	5+
32	1952/06/30	78	8	5+	8	8-	7	4-	2+	2-	2+
33	1952/05/27	72	8	8	6-	5-	5+	4+	5+	6-	5
34	1947/07/17	68	8	1	1-	1-	2	1+	7	8	8-
35	1949/05/13	59	8	8	7+	3+	2	5+	3+	1	2+
36	1951/06/17	38	8	2+	1+	2-	1	1-	5-	4+	8
37	1948/08/08	146	8-	5+	7-	7+	8-	8-	7	8-	8-
38	1946/09/18	136	8-	7+	7+	8-	7	7	7	7+	5
39	1947/09/25	100	8-	8-	7+	7+	6	6	6-	5	5-
40	1948/10/19	94	8-	7-	7+	8-	7+	5+	5+	4+	2+
41	1949/10/14	91	8-	4-	4+	5	6+	6-	7+	8-	7
42	1949/03/22	90	8-	7	8-	7-	7-	5-	6-	6-	3+
43	1947/03/08	90	8-	2	3+	5+	6-	8-	7+	7-	7
44	1951/07/02	82	8-	7+	8-	7-	6	4	5-	4	5-
45	1952/03/31	80	8-	8-	6	7-	5+	4	6	5+	5
46	1950/02/21	79	8-	7+	8-	6+	5-	5+	5-	4+	5-
47	1950/08/08	71	8-	8-	6+	8-	5	3+	3-	3-	4
48	1951/04/18	66	8-	1	1	4+	7	8-	6	5	5
49	1951/09/19	59	8-	3	2+	4-	4-	5+	8-	7	5-
50	1953/05/15	55	8-	1	3	3-	2+	5+	5+	8-	7-

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Månadsvis faktiskt antal solfläckar
november 2025	91.8 -22.8
december 2025	125.7 +33.9
Last 30 days	109.3 +18.1

I dag i historien*

Solutbrott
1	2013	M5.07
2	2002	M3.87
3	2024	M3.81
4	2001	M1.92
5	2014	M1.9

		Dst	G
1	1980	-240	G4
2	1985	-87	G2
3	1958	-78	G1
4	1971	-76
5	2002	-72	G1

*sedan 1994

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