Aurora & Space WeatherHome › Geomagnetic history › 1955
Geomagnetic storm on 30 Sep 1955 (G3)
Max Kp7-G3
Ap54No. 5 in 1955
Consecutive G1+ days2
Ap rank754since 1932
Kp by 3-hour slot (UTC)
4+
6+
7-
6-
5o
4o
3+
4+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 27 Sep 1955 | 4+ | 20 | – |
| 28 Sep 1955 | 4+ | 16 | – |
| 29 Sep 1955 | 5o | 20 | G1 |
| 30 Sep 1955 | 7- | 54 | G3 |
| 1 Oct 1955 | 4+ | 13 | – |
| 2 Oct 1955 | 4+ | 15 | – |
| 3 Oct 1955 | 4o | 15 | – |
Highest-Ap days of 1955
65
59
56
54
54
53
53
47
44
43
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 7-, Ap 54: No. 754 of 34,615 days since 1932 by Ap.