Geomagnetic storms in 1947
In 1947, the maximum daily Kp reached storm level (Kp 5 or more) on 111 days. 25 days were strong (Kp 7 or more) and 1 extreme (Kp 9).
Max Kp9−
Storm days (Kp ≥ 5)111
Strong (Kp ≥ 7)25
Extreme (Kp 9)1
Storm days by month
Strongest storms
| Date | Max Kp | Daily Ap |
|---|---|---|
| March 3, 1947 | 8+ | 128 |
| April 17, 1947 | 9− | 100 |
| September 25, 1947 | 8− | 100 |
| March 8, 1947 | 8− | 90 |
| September 24, 1947 | 7+ | 90 |
| September 3, 1947 | 7+ | 84 |
| March 4, 1947 | 7+ | 82 |
| March 2, 1947 | 7 | 81 |
| July 18, 1947 | 7− | 80 |
| March 28, 1947 | 7− | 75 |
GFZ Potsdam, Kp index (CC BY 4.0), doi:10.5880/Kp.0001.