Home › Geomagnetic history › 1940

Geomagnetic storm on 2 Apr 1940 (G3)

Max Kp7oG3

Ap34No. 34 in 1940

Consecutive G1+ days12

Ap rank2,230since 1932

Kp by 3-hour slot (UTC)

00–032+

03–062+

06–092o

09–122-

12–152o

15–183+

18–217o

21–246o

The days around it

Date	Max Kp	Ap	Level
30 Mar 1940	9-	189	G5
31 Mar 1940	8+	128	G4
1 Apr 1940	7-	66	G3
2 Apr 1940	7o	34	G3
3 Apr 1940	8o	98	G4
4 Apr 1940	4-	15	–
5 Apr 1940	3+	9	–

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.

← 1 Apr 1940 3 Apr 1940 →

About this page

Max Kp 7o, Ap 34: No. 2,230 of 34,615 days since 1932 by Ap.