Aurora & Space WeatherHome › Geomagnetic history › 1938
Geomagnetic storm on 14 Apr 1938 (G3)
Max Kp7oG3
Ap60No. 11 in 1938
Consecutive G1+ days4
Ap rank590since 1932
Kp by 3-hour slot (UTC)
6-
6+
7o
5o
5+
4+
4+
3+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 11 Apr 1938 | 5- | 16 | G1 |
| 12 Apr 1938 | 4- | 12 | – |
| 13 Apr 1938 | 7- | 36 | G3 |
| 14 Apr 1938 | 7o | 60 | G3 |
| 15 Apr 1938 | 5- | 19 | G1 |
| 16 Apr 1938 | 9o | 136 | G5 |
| 17 Apr 1938 | 4+ | 21 | – |
Highest-Ap days of 1938
136
128
120
107
103
100
76
67
67
62
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 60: No. 590 of 34,615 days since 1932 by Ap.