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Geomagnetic storm on 18 Sep 1946 (G4)

Max Kp8-G4

Ap136No. 6 in 1946

Consecutive G1+ days4

Ap rank65since 1932

Kp by 3-hour slot (UTC)

00–037+

03–067+

06–098-

09–127o

12–157o

15–187o

18–217+

21–245o

The days around it

Date	Max Kp	Ap	Level
15 Sep 1946	3-	6	–
16 Sep 1946	7o	34	G3
17 Sep 1946	6-	29	G2
18 Sep 1946	8-	136	G4
19 Sep 1946	7-	58	G3
20 Sep 1946	4o	14	–
21 Sep 1946	5+	22	G1

Highest-Ap days of 1946

28 Mar 1946213

22 Sep 1946198

25 Mar 1946195

27 Jul 1946152

23 Sep 1946146

18 Sep 1946136

7 Feb 1946127

8 Feb 1946118

24 Mar 1946117

23 Apr 1946117

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.

← 16 Sep 1946 19 Sep 1946 →

About this page

Max Kp 8-, Ap 136: No. 65 of 34,615 days since 1932 by Ap.