Geomagnetic storms in 1977
In 1977, the maximum daily Kp reached storm level (Kp 5 or more) on 66 days. 8 days were strong (Kp 7 or more) and 0 extreme (Kp 9).
Max Kp7+
Storm days (Kp ≥ 5)66
Strong (Kp ≥ 7)8
Extreme (Kp 9)0
Storm days by month
Strongest storms
| Date | Max Kp | Daily Ap |
|---|---|---|
| December 2, 1977 | 7 | 69 |
| May 2, 1977 | 6+ | 66 |
| September 21, 1977 | 7+ | 64 |
| September 22, 1977 | 7− | 63 |
| October 27, 1977 | 7− | 62 |
| July 29, 1977 | 7− | 61 |
| April 6, 1977 | 7 | 49 |
| April 7, 1977 | 7− | 48 |
| April 19, 1977 | 6+ | 48 |
| October 28, 1977 | 7+ | 47 |
GFZ Potsdam, Kp index (CC BY 4.0), doi:10.5880/Kp.0001.