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Geomagnetic storm on 21 Apr 1956 (G3)
Max Kp7oG3
Ap59No. 16 in 1956
Consecutive G1+ days2
Ap rank627since 1932
Kp by 3-hour slot (UTC)
3+
3+
3+
5+
5+
5-
7o
7o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Apr 1956 | 4o | 15 | – |
| 19 Apr 1956 | 4o | 13 | – |
| 20 Apr 1956 | 3o | 9 | – |
| 21 Apr 1956 | 7o | 59 | G3 |
| 22 Apr 1956 | 7+ | 80 | G3 |
| 23 Apr 1956 | 4o | 11 | – |
| 24 Apr 1956 | 2+ | 5 | – |
Highest-Ap days of 1956
172
156
103
102
95
86
84
82
80
78
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.
About this page
Max Kp 7o, Ap 59: No. 627 of 34,615 days since 1932 by Ap.