Aurora & Space WeatherHome › Geomagnetic history › 1958
Geomagnetic storm on 25 Sep 1958 (G3)
Max Kp7oG3
Ap82No. 8 in 1958
Consecutive G1+ days2
Ap rank284since 1932
Kp by 3-hour slot (UTC)
3+
6o
6o
6o
6+
6+
6o
7o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 22 Sep 1958 | 2o | 4 | – |
| 23 Sep 1958 | 2o | 5 | – |
| 24 Sep 1958 | 3- | 6 | – |
| 25 Sep 1958 | 7o | 82 | G3 |
| 26 Sep 1958 | 5o | 25 | G1 |
| 27 Sep 1958 | 3o | 10 | – |
| 28 Sep 1958 | 3+ | 8 | – |
Highest-Ap days of 1958
200
199
131
103
89
85
82
82
77
75
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 82: No. 284 of 34,615 days since 1932 by Ap.