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Geomagnetic storm on 18 Sep 1941 (G5)

Max Kp9-G5

Ap232No. 1 in 1941

Consecutive G1+ days4

Ap rank6since 1932

Kp by 3-hour slot (UTC)

00–032o

03–067-

06–098+

09–129-

12–159-

15–189-

18–219-

21–249-

The days around it

Date	Max Kp	Ap	Level
15 Sep 1941	5+	26	G1
16 Sep 1941	6-	20	G2
17 Sep 1941	3o	10	–
18 Sep 1941	9-	232	G5
19 Sep 1941	9o	176	G5
20 Sep 1941	6+	36	G2
21 Sep 1941	6o	30	G2

Highest-Ap days of 1941

18 Sep 1941232

5 Jul 1941222

1 Mar 1941207

19 Sep 1941176

4 Aug 1941110

30 Mar 194185

1 Dec 194183

14 Mar 194179

1 Nov 194179

31 Mar 194176

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.

← 4 Aug 1941 19 Sep 1941 →

About this page

Max Kp 9-, Ap 232: No. 6 of 34,615 days since 1932 by Ap.