Geomagnetic storms in 1957
In 1957, the maximum daily Kp reached storm level (Kp 5 or more) on 118 days. 31 days were strong (Kp 7 or more) and 7 extreme (Kp 9).
Max Kp9
Storm days (Kp ≥ 5)118
Strong (Kp ≥ 7)31
Extreme (Kp 9)7
Storm days by month
Strongest storms
| Date | Max Kp | Daily Ap |
|---|---|---|
| September 23, 1957 | 9− | 164 |
| September 13, 1957 | 9− | 160 |
| June 30, 1957 | 8+ | 150 |
| September 4, 1957 | 9 | 145 |
| September 29, 1957 | 9− | 139 |
| September 3, 1957 | 9− | 135 |
| March 2, 1957 | 8+ | 132 |
| September 5, 1957 | 9− | 112 |
| September 22, 1957 | 8+ | 104 |
| September 2, 1957 | 8− | 102 |
GFZ Potsdam, Kp index (CC BY 4.0), doi:10.5880/Kp.0001.