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Geomagnetic storm on 3 Aug 1938 (G3)

Max Kp7+G3

Ap27No. 61 in 1938

Consecutive G1+ days5

Ap rank3,512since 1932

Kp by 3-hour slot (UTC)

00–034o

03–062o

06–092-

09–120+

12–150o

15–183-

18–212+

21–247+

The days around it

Date	Max Kp	Ap	Level
31 Jul 1938	3+	5	–
1 Aug 1938	5-	19	G1
2 Aug 1938	6o	27	G2
3 Aug 1938	7+	27	G3
4 Aug 1938	7-	50	G3
5 Aug 1938	5o	29	G1
6 Aug 1938	3+	12	–

Highest-Ap days of 1938

16 Apr 1938136

22 Jan 1938128

17 Jan 1938120

25 Jan 1938107

11 May 1938103

15 Sep 1938100

12 May 193876

15 Jul 193867

7 Oct 193867

26 Jan 193862

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.

← 15 Jul 1938 4 Aug 1938 →

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Max Kp 7+, Ap 27: No. 3,512 of 34,615 days since 1932 by Ap.