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Geomagnetic storm on 24 Apr 1939 (G5)

Max Kp9-G5

Ap79No. 8 in 1939

Consecutive G1+ days4

Ap rank308since 1932

Kp by 3-hour slot (UTC)

00–033+

03–062+

06–092o

09–122+

12–151+

15–187o

18–219-

21–247+

The days around it

Date	Max Kp	Ap	Level
21 Apr 1939	4+	24	–
22 Apr 1939	5-	20	G1
23 Apr 1939	8-	92	G4
24 Apr 1939	9-	79	G5
25 Apr 1939	7+	61	G3
26 Apr 1939	4+	9	–
27 Apr 1939	6o	14	G2

Highest-Ap days of 1939

17 Apr 1939135

22 Aug 1939133

5 Jul 193994

23 Apr 193992

23 Aug 193989

13 Oct 193989

12 Aug 193988

24 Apr 193979

14 Oct 193974

25 Feb 193973

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.

← 23 Apr 1939 25 Apr 1939 →

About this page

Max Kp 9-, Ap 79: No. 308 of 34,615 days since 1932 by Ap.