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Geomagnetic storm on 15 Sep 1938 (G3)
Max Kp7+G3
Ap100No. 6 in 1938
Consecutive G1+ days3
Ap rank163since 1932
Kp by 3-hour slot (UTC)
6+
7-
7-
7-
7+
6+
6+
4+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 12 Sep 1938 | 3o | 10 | – |
| 13 Sep 1938 | 5+ | 21 | G1 |
| 14 Sep 1938 | 6+ | 49 | G2 |
| 15 Sep 1938 | 7+ | 100 | G3 |
| 16 Sep 1938 | 4o | 12 | – |
| 17 Sep 1938 | 4o | 10 | – |
| 18 Sep 1938 | 2o | 5 | – |
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 7+, Ap 100: No. 163 of 34,615 days since 1932 by Ap.