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Geomagnetic storm on 21 Feb 1973 (G3)

Max Kp7+G3

Ap49No. 17 in 1973

Consecutive G1+ days10

Ap rank968since 1932

Kp by 3-hour slot (UTC)

00–035-

03–063+

06–091+

09–122o

12–152o

15–185o

18–217+

21–247-

The days around it

Date	Max Kp	Ap	Level
18 Feb 1973	4-	11	–
19 Feb 1973	3+	10	–
20 Feb 1973	4o	9	–
21 Feb 1973	7+	49	G3
22 Feb 1973	6+	46	G2
23 Feb 1973	6-	48	G2
24 Feb 1973	6o	54	G2

Highest-Ap days of 1973

1 Apr 197391

29 Oct 197386

19 Mar 197382

20 Mar 197380

14 May 197380

23 Sep 197363

16 Apr 197360

29 Apr 197359

21 Mar 197358

14 Apr 197357

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 Dec 1972 19 Mar 1973 →

About this page

Max Kp 7+, Ap 49: No. 968 of 34,615 days since 1932 by Ap.