Home › Geomagnetic history › 1940

Geomagnetic storm on 25 Mar 1940 (G5)

Max Kp9-G5

Ap184No. 3 in 1940

Consecutive G1+ days12

Ap rank25since 1932

Kp by 3-hour slot (UTC)

00–039-

03–068+

06–098+

09–128o

12–157o

15–185-

18–217-

21–248o

The days around it

Date	Max Kp	Ap	Level
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
27 Mar 1940	5+	30	G1
28 Mar 1940	5+	21	G1

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.

← 24 Mar 1940 26 Mar 1940 →

About this page

Max Kp 9-, Ap 184: No. 25 of 34,615 days since 1932 by Ap.