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Geomagnetic storm on 29 Mar 1940 (G4)

Max Kp8+G4

Ap100No. 6 in 1940

Consecutive G1+ days12

Ap rank164since 1932

Kp by 3-hour slot (UTC)

00–033-

03–062-

06–092+

09–125o

12–155o

15–188+

18–218o

21–248+

The days around it

Date	Max Kp	Ap	Level
26 Mar 1940	7+	53	G3
27 Mar 1940	5+	30	G1
28 Mar 1940	5+	21	G1
29 Mar 1940	8+	100	G4
30 Mar 1940	9-	189	G5
31 Mar 1940	8+	128	G4
1 Apr 1940	7-	66	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.

← 26 Mar 1940 30 Mar 1940 →

About this page

Max Kp 8+, Ap 100: No. 164 of 34,615 days since 1932 by Ap.