Aurora & Space WeatherYears with the most storm days
164
159
158
155
150
147
141
140
139
133
128
125
123
123
122
122
118
116
111
111
| Year | G1+ | G3+ | Mean Ap |
|---|---|---|---|
| 1951 | 164 | 26 | 22.3 |
| 1982 | 159 | 26 | 22.4 |
| 2003 | 158 | 17 | 21.8 |
| 1960 | 155 | 39 | 23.7 |
| 1952 | 150 | 27 | 21.2 |
| 1974 | 147 | 10 | 19.6 |
| 1991 | 141 | 38 | 23.4 |
| 1983 | 140 | 12 | 18.5 |
| 1984 | 139 | 15 | 18.8 |
| 1959 | 133 | 24 | 21.3 |
| 1943 | 128 | 12 | 17.0 |
| 1994 | 125 | 13 | 18.1 |
| 1950 | 123 | 19 | 18.0 |
| 1989 | 123 | 24 | 19.5 |
| 1956 | 122 | 25 | 18.0 |
| 1958 | 122 | 24 | 19.2 |
| 1957 | 118 | 31 | 20.1 |
| 1973 | 116 | 13 | 17.0 |
| 1947 | 111 | 25 | 18.8 |
| 1978 | 111 | 21 | 16.9 |
| 1953 | 108 | 12 | 15.6 |
| 1993 | 108 | 13 | 15.0 |
| 1992 | 107 | 18 | 16.5 |
| 1990 | 104 | 20 | 16.2 |
| 1939 | 103 | 26 | 16.6 |
| 1946 | 102 | 26 | 18.6 |
| 1941 | 100 | 14 | 16.8 |
| 1995 | 100 | 5 | 12.6 |
| 1981 | 97 | 16 | 16.3 |
| 2025 | 97 | 13 | 15.5 |
| 1938 | 95 | 22 | 15.2 |
| 1948 | 94 | 11 | 15.4 |
| 1961 | 93 | 17 | 14.4 |
| 1942 | 92 | 10 | 13.8 |
| 1949 | 92 | 23 | 15.4 |
| 1975 | 91 | 6 | 13.9 |
| 1940 | 88 | 23 | 16.1 |
| 1979 | 88 | 14 | 14.5 |
| 1985 | 83 | 10 | 13.7 |
| 2000 | 83 | 19 | 15.0 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.