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Geomagnetic storm on 23 Mar 1940 (G3)

Max Kp7+G3

Ap51No. 14 in 1940

Consecutive G1+ days12

Ap rank857since 1932

Kp by 3-hour slot (UTC)

00–031o

03–063-

06–095o

09–126o

12–154o

15–184+

18–215o

21–247+

The days around it

Date	Max Kp	Ap	Level
20 Mar 1940	5-	27	G1
21 Mar 1940	4-	10	–
22 Mar 1940	3+	10	–
23 Mar 1940	7+	51	G3
24 Mar 1940	9o	187	G5
25 Mar 1940	9-	184	G5
26 Mar 1940	7+	53	G3

Highest-Ap days of 1940

30 Mar 1940189

24 Mar 1940187

25 Mar 1940184

31 Mar 1940128

25 Jun 1940126

29 Mar 1940100

3 Apr 194098

24 May 194078

25 Apr 194070

1 Apr 194066

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.

← 18 Jan 1940 24 Mar 1940 →

About this page

Max Kp 7+, Ap 51: No. 857 of 34,615 days since 1932 by Ap.