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Geomagnetic storm on 9 Oct 1939 (G3)
Max Kp7-G3
Ap32No. 47 in 1939
Consecutive G1+ days1
Ap rank2,523since 1932
Kp by 3-hour slot (UTC)
4-
3o
7-
3+
5+
3-
3o
1+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Oct 1939 | 6+ | 32 | G2 |
| 7 Oct 1939 | 5- | 14 | G1 |
| 8 Oct 1939 | 3+ | 10 | – |
| 9 Oct 1939 | 7- | 32 | G3 |
| 10 Oct 1939 | 2+ | 5 | – |
| 11 Oct 1939 | 3+ | 11 | – |
| 12 Oct 1939 | 3o | 4 | – |
Highest-Ap days of 1939
135
133
94
92
89
89
88
79
74
73
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 32: No. 2,523 of 34,615 days since 1932 by Ap.