Home › Geomagnetic history › 1957
Geomagnetic storm on 5 Sep 1957 (G5)
Max Kp9-G5
Ap112No. 8 in 1957
Consecutive G1+ days9
Ap rank122since 1932
Kp by 3-hour slot (UTC)
8+
9-
7-
5o
5-
4o
5+
6o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Sep 1957 | 8- | 102 | G4 |
| 3 Sep 1957 | 9- | 135 | G5 |
| 4 Sep 1957 | 9o | 145 | G5 |
| 5 Sep 1957 | 9- | 112 | G5 |
| 6 Sep 1957 | 6- | 36 | G2 |
| 7 Sep 1957 | 4- | 11 | – |
| 8 Sep 1957 | 3- | 7 | – |
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 9-, Ap 112: No. 122 of 34,615 days since 1932 by Ap.