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Geomagnetic storm on 18 Oct 1948 (G4)

Max Kp8+G4

Ap86No. 4 in 1948

Consecutive G1+ days8

Ap rank246since 1932

Kp by 3-hour slot (UTC)

00–038+

03–067-

06–095+

09–124-

12–154-

15–184o

18–215+

21–247+

The days around it

Date	Max Kp	Ap	Level
15 Oct 1948	6-	51	G2
16 Oct 1948	3o	7	–
17 Oct 1948	8+	35	G4
18 Oct 1948	8+	86	G4
19 Oct 1948	8-	94	G4
20 Oct 1948	5o	21	G1
21 Oct 1948	7-	67	G3

Highest-Ap days of 1948

8 Aug 1948146

15 Mar 1948140

19 Oct 194894

18 Oct 194886

10 Aug 194874

16 May 194872

21 Oct 194867

2 Nov 194856

15 Oct 194851

22 Apr 194850

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 Oct 1948 19 Oct 1948 →

About this page

Max Kp 8+, Ap 86: No. 246 of 34,615 days since 1932 by Ap.