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Geomagnetic storm on 9 Sep 1973 (G4)
Max Kp8-G4
Ap44No. 29 in 1973
Consecutive G1+ days2
Ap rank1,275since 1932
Kp by 3-hour slot (UTC)
1+
1o
2o
4o
4+
4o
6-
8-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Sep 1973 | 3o | 9 | – |
| 7 Sep 1973 | 3+ | 8 | – |
| 8 Sep 1973 | 3- | 8 | – |
| 9 Sep 1973 | 8- | 44 | G4 |
| 10 Sep 1973 | 6o | 27 | G2 |
| 11 Sep 1973 | 4+ | 12 | – |
| 12 Sep 1973 | 3- | 7 | – |
Highest-Ap days of 1973
91
86
82
80
80
63
60
59
58
57
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. 1,275 of 34,615 days since 1932 by Ap.