On this page you will find an overview of the strongest geomagnetic storms since January 1932 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. The Ap-index provides a daily geomagnetic activity average. This page is updated daily. Times are in UTC.
Ap | 00-03h | 03-06h | 06-09h | 09-12h | 12-15h | 15-18h | 18-21h | 21-00h | Kp max | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 1960/11/13 | 280 | 9- | 9- | 9 | 9 | 9- | 8+ | 8 | 6+ | 9 | |
2 | 1989/03/13 | 246 | 6 | 8- | 9- | 8+ | 8+ | 8+ | 9- | 9 | 9 | |
3 | 1959/07/15 | 236 | 4+ | 5 | 8 | 9- | 9- | 9 | 9- | 9- | 9 | |
4 | 1941/07/05 | 222 | 6+ | 6+ | 9- | 9- | 9 | 9- | 7- | 8- | 9 | |
5 | 1941/03/01 | 207 | 3 | 6+ | 8 | 8 | 9- | 9 | 9- | 7 | 9 | |
6 | 2003/10/29 | 204 | 5- | 4 | 9 | 8 | 8- | 8- | 9- | 9- | 9 | View archive |
7 | 1986/02/08 | 202 | 7 | 7 | 7+ | 7- | 8 | 8- | 9 | 9- | 9 | |
8 | 1958/07/08 | 200 | 3 | 3- | 7+ | 8- | 8+ | 9 | 9- | 9- | 9 | |
9 | 1958/02/11 | 199 | 9 | 8+ | 9- | 8+ | 8 | 5+ | 6 | 6 | 9 | |
10 | 1946/09/22 | 198 | 4- | 8+ | 8- | 9- | 9 | 8+ | 7 | 6 | 9 | |
11 | 2003/10/30 | 191 | 9- | 7+ | 5+ | 5- | 5 | 7 | 9 | 9 | 9 | View archive |
12 | 1940/03/24 | 187 | 6+ | 6 | 5 | 4+ | 8 | 9 | 9 | 8+ | 9 | |
13 | 1960/10/07 | 186 | 9 | 9- | 8- | 8- | 7+ | 7 | 6- | 6 | 9 | |
14 | 1941/09/19 | 176 | 9- | 9 | 9- | 7+ | 4 | 5 | 7+ | 4 | 9 | |
15 | 1960/04/30 | 174 | 7- | 7- | 6- | 6- | 9- | 9 | 8 | 7 | 9 | |
16 | 2000/07/15 | 164 | 3 | 4- | 5- | 4+ | 8 | 9- | 9 | 9- | 9 | View archive |
17 | 1989/03/14 | 158 | 9 | 8- | 8- | 6- | 5 | 5+ | 8- | 7+ | 9 | |
18 | 1982/07/14 | 153 | 9 | 8- | 7- | 7 | 6 | 7 | 7- | 6 | 9 | |
19 | 1946/07/27 | 152 | 9- | 9- | 9 | 7- | 5+ | 4- | 4- | 2+ | 9 | |
20 | 1970/03/08 | 149 | 4+ | 5 | 6- | 5 | 7+ | 8 | 9 | 8+ | 9 | |
21 | 1967/05/26 | 146 | 9 | 9- | 7+ | 7- | 7- | 4- | 4 | 5- | 9 | |
22 | 1957/09/04 | 145 | 4- | 5- | 2+ | 3- | 8+ | 9 | 8 | 8+ | 9 | |
23 | 1982/07/13 | 144 | 5- | 6- | 5 | 4+ | 4+ | 8+ | 9- | 9 | 9 | |
24 | 1938/04/16 | 136 | 3+ | 7 | 9 | 8 | 8- | 6- | 4+ | 5+ | 9 | |
25 | 1972/08/04 | 132 | 6- | 8+ | 7 | 4 | 5+ | 4 | 7- | 9 | 9 | |
26 | 1967/05/25 | 130 | 2- | 2 | 1 | 5+ | 8+ | 7+ | 8- | 9 | 9 | |
27 | 1960/04/01 | 241 | 9- | 9- | 7 | 8 | 8+ | 9- | 9- | 7+ | 9- | |
28 | 1941/09/18 | 232 | 2 | 7- | 8+ | 9- | 9- | 9- | 9- | 9- | 9- | |
29 | 1946/03/28 | 213 | 5 | 6 | 8+ | 9- | 9- | 9- | 8+ | 8 | 9- | |
30 | 1960/10/06 | 203 | 6 | 8 | 7+ | 8 | 8 | 8+ | 8+ | 9- | 9- | |
31 | 1982/09/06 | 199 | 8 | 8+ | 8+ | 8+ | 9- | 7+ | 7 | 6+ | 9- | |
32 | 1991/06/05 | 196 | 7- | 7+ | 8 | 8 | 8 | 9- | 8 | 8- | 9- | |
33 | 1946/03/25 | 195 | 8- | 7+ | 7+ | 8- | 8+ | 9- | 8- | 8- | 9- | |
34 | 2001/03/31 | 192 | 7- | 9- | 9- | 6+ | 7 | 8 | 8+ | 7+ | 9- | View archive |
35 | 1940/03/30 | 189 | 9- | 8+ | 8+ | 8 | 7+ | 8- | 7 | 6- | 9- | |
36 | 2004/07/27 | 186 | 8+ | 8- | 7+ | 8 | 9- | 8+ | 6+ | 6 | 9- | View archive |
37 | 1940/03/25 | 184 | 9- | 8+ | 8+ | 8 | 7 | 5- | 7- | 8 | 9- | |
38 | 1972/08/05 | 182 | 8+ | 8+ | 7 | 7+ | 8- | 9- | 7+ | 6- | 9- | |
39 | 1992/05/10 | 179 | 5+ | 6+ | 8 | 9- | 8+ | 8- | 8 | 7+ | 9- | |
40 | 1956/04/27 | 172 | 9- | 9- | 8- | 8- | 7- | 7- | 7 | 6- | 9- | |
41 | 1957/09/23 | 164 | 8 | 9- | 8- | 8- | 8- | 7- | 7- | 5 | 9- | |
42 | 2004/11/10 | 161 | 8- | 8+ | 9- | 8+ | 7+ | 6+ | 5+ | 4+ | 9- | View archive |
43 | 1991/03/24 | 161 | 3 | 9- | 8 | 7+ | 5+ | 5 | 8 | 9- | 9- | |
44 | 1957/09/13 | 160 | 8- | 8+ | 9- | 9- | 7 | 6 | 4 | 4 | 9- | |
45 | 1949/01/25 | 156 | 9- | 8 | 7- | 4+ | 5 | 6 | 8+ | 8+ | 9- | |
46 | 1949/05/12 | 153 | 2 | 2 | 7+ | 7+ | 8+ | 9- | 8+ | 7 | 9- | |
47 | 2003/11/20 | 150 | 1 | 4- | 6+ | 6+ | 8- | 9- | 9- | 8 | 9- | View archive |
48 | 2001/11/06 | 142 | 9- | 9- | 7 | 5 | 5+ | 7- | 6+ | 6+ | 9- | View archive |
49 | 2004/11/08 | 140 | 9- | 9- | 8+ | 7 | 5 | 3- | 4+ | 5+ | 9- | View archive |
50 | 1957/09/29 | 139 | 4 | 5+ | 5 | 4+ | 8 | 9- | 8+ | 8 | 9- |
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Last X-flare | 2024/05/09 | X1.1 |
Last M-flare | 2024/05/10 | M1.3 |
Last geomagnetic storm | 2024/05/06 | Kp5 (G1) |
Spotless days | |
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Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
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April 2024 | 136.5 +31.6 |
Last 30 days | 167.9 +77.8 |