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Geomagnetic storm on 24 Apr 1937 (G4)

Max Kp8oG4

Ap45No. 13 in 1937

Consecutive G1+ days5

Ap rank1,171since 1932

Kp by 3-hour slot (UTC)

00–032-

03–062+

06–092o

09–123-

12–154o

15–185-

18–215+

21–248o

The days around it

Date	Max Kp	Ap	Level
21 Apr 1937	4o	12	–
22 Apr 1937	2o	4	–
23 Apr 1937	3o	6	–
24 Apr 1937	8o	45	G4
25 Apr 1937	7+	72	G3
26 Apr 1937	8+	67	G4
27 Apr 1937	7o	61	G3

Highest-Ap days of 1937

28 Apr 1937128

22 Aug 193774

25 Apr 193772

4 Oct 193771

26 Apr 193767

5 May 193765

27 Apr 193761

3 Feb 193756

31 Mar 193753

28 May 193750

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.

← 31 Mar 1937 25 Apr 1937 →

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Max Kp 8o, Ap 45: No. 1,171 of 34,615 days since 1932 by Ap.