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Geomagnetic storm on 7 Oct 1938 (G3)
Max Kp7oG3
Ap67No. 9 in 1938
Consecutive G1+ days2
Ap rank456since 1932
Kp by 3-hour slot (UTC)
0o
2+
5-
5-
7o
7o
7o
5+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Oct 1938 | 4- | 10 | – |
| 5 Oct 1938 | 1o | 2 | – |
| 6 Oct 1938 | 3- | 7 | – |
| 7 Oct 1938 | 7o | 67 | G3 |
| 8 Oct 1938 | 7o | 58 | G3 |
| 9 Oct 1938 | 4- | 12 | – |
| 10 Oct 1938 | 3+ | 11 | – |
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 67: No. 456 of 34,615 days since 1932 by Ap.