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Geomagnetic storm on 19 Apr 1939 (G3)

Max Kp7-G3

Ap45No. 25 in 1939

Consecutive G1+ days4

Ap rank1,174since 1932

Kp by 3-hour slot (UTC)

00–034o

03–064o

06–095-

09–123-

12–156-

15–187-

18–215o

21–244o

The days around it

Date	Max Kp	Ap	Level
16 Apr 1939	3o	4	–
17 Apr 1939	8o	135	G4
18 Apr 1939	6o	42	G2
19 Apr 1939	7-	45	G3
20 Apr 1939	5o	27	G1
21 Apr 1939	4+	24	–
22 Apr 1939	5-	20	G1

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.

← 17 Apr 1939 23 Apr 1939 →

About this page

Max Kp 7-, Ap 45: No. 1,174 of 34,615 days since 1932 by Ap.