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Geomagnetic storm on 29 Sep 1957 (G5)

Max Kp9-G5

Ap139No. 5 in 1957

Consecutive G1+ days2

Ap rank62since 1932

Kp by 3-hour slot (UTC)

00–034o

03–065+

06–095o

09–124+

12–158o

15–189-

18–218+

21–248o

The days around it

Date	Max Kp	Ap	Level
26 Sep 1957	3-	8	–
27 Sep 1957	2-	4	–
28 Sep 1957	4-	10	–
29 Sep 1957	9-	139	G5
30 Sep 1957	6+	56	G2
1 Oct 1957	4+	21	–
2 Oct 1957	4-	12	–

Highest-Ap days of 1957

23 Sep 1957164

13 Sep 1957160

30 Jun 1957150

4 Sep 1957145

29 Sep 1957139

3 Sep 1957135

2 Mar 1957132

5 Sep 1957112

22 Sep 1957104

2 Sep 1957102

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.

← 23 Sep 1957 21 Oct 1957 →

About this page

Max Kp 9-, Ap 139: No. 62 of 34,615 days since 1932 by Ap.