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Geomagnetic storm on 22 Sep 1964 (G4)
Max Kp8-G4
Ap44No. 5 in 1964
Consecutive G1+ days1
Ap rank1,271since 1932
Kp by 3-hour slot (UTC)
7-
8-
3+
2+
2+
2o
2+
2+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 19 Sep 1964 | 1o | 3 | – |
| 20 Sep 1964 | 1+ | 2 | – |
| 21 Sep 1964 | 2+ | 5 | – |
| 22 Sep 1964 | 8- | 44 | G4 |
| 23 Sep 1964 | 4- | 8 | – |
| 24 Sep 1964 | 3+ | 9 | – |
| 25 Sep 1964 | 3- | 5 | – |
Highest-Ap days of 1964
53
52
49
46
44
35
34
33
33
32
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 8-, Ap 44: No. 1,271 of 34,615 days since 1932 by Ap.