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Geomagnetic storm on 2 Sep 1957 (G4)
Max Kp8-G4
Ap102No. 10 in 1957
Consecutive G1+ days9
Ap rank157since 1932
Kp by 3-hour slot (UTC)
3-
6o
6+
5+
7o
6o
8-
8-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 30 Aug 1957 | 7- | 38 | G3 |
| 31 Aug 1957 | 7o | 36 | G3 |
| 1 Sep 1957 | 6- | 28 | G2 |
| 2 Sep 1957 | 8- | 102 | G4 |
| 3 Sep 1957 | 9- | 135 | G5 |
| 4 Sep 1957 | 9o | 145 | G5 |
| 5 Sep 1957 | 9- | 112 | G5 |
Highest-Ap days of 1957
164
160
150
145
139
135
132
112
104
102
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 102: No. 157 of 34,615 days since 1932 by Ap.