Geomagnetic storms in 1990
In 1990, the maximum daily Kp reached storm level (Kp 5 or more) on 104 days. 20 days were strong (Kp 7 or more) and 0 extreme (Kp 9).
Max Kp8+
Storm days (Kp ≥ 5)104
Strong (Kp ≥ 7)20
Extreme (Kp 9)0
Storm days by month
Strongest storms
| Date | Max Kp | Daily Ap |
|---|---|---|
| April 10, 1990 | 8 | 124 |
| July 28, 1990 | 8− | 102 |
| April 12, 1990 | 8− | 99 |
| June 12, 1990 | 8+ | 89 |
| June 14, 1990 | 8− | 79 |
| August 23, 1990 | 7 | 77 |
| March 21, 1990 | 7+ | 76 |
| July 29, 1990 | 7 | 75 |
| June 13, 1990 | 8− | 70 |
| March 30, 1990 | 8 | 69 |
GFZ Potsdam, Kp index (CC BY 4.0), doi:10.5880/Kp.0001.