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Geomagnetic storm on 20 Oct 1981 (G3)

Max Kp7oG3

Ap67No. 8 in 1981

Consecutive G1+ days6

Ap rank461since 1932

Kp by 3-hour slot (UTC)

00–034o

03–064-

06–093+

09–125-

12–157-

15–187o

18–217o

21–245+

The days around it

Date	Max Kp	Ap	Level
17 Oct 1981	4+	18	–
18 Oct 1981	3o	6	–
19 Oct 1981	4+	23	–
20 Oct 1981	7o	67	G3
21 Oct 1981	6-	33	G2
22 Oct 1981	7o	72	G3
23 Oct 1981	6-	27	G2

Highest-Ap days of 1981

25 Jul 1981134

13 Apr 1981121

12 Apr 198196

5 Mar 198181

26 Jul 198178

14 Oct 198173

22 Oct 198172

20 Oct 198167

26 Apr 198162

11 May 198161

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.

← 14 Oct 1981 22 Oct 1981 →

About this page

Max Kp 7o, Ap 67: No. 461 of 34,615 days since 1932 by Ap.