Home › Geomagnetic history › 1991

Geomagnetic storm on 21 Nov 1991 (G3)

Max Kp7-G3

Ap65No. 23 in 1991

Consecutive G1+ days3

Ap rank490since 1932

Kp by 3-hour slot (UTC)

00–033-

03–065-

06–095o

09–125o

12–155-

15–187-

18–217-

21–247-

The days around it

Date	Max Kp	Ap	Level
18 Nov 1991	5o	30	G1
19 Nov 1991	6+	56	G2
20 Nov 1991	4o	18	–
21 Nov 1991	7-	65	G3
22 Nov 1991	6+	57	G2
23 Nov 1991	5o	33	G1
24 Nov 1991	3+	14	–

Highest-Ap days of 1991

5 Jun 1991196

24 Mar 1991161

13 Jul 1991134

25 Mar 1991130

29 Oct 1991128

13 Jun 1991120

10 Jun 1991119

9 Nov 1991119

9 Jul 1991117

26 Mar 1991114

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.

← 9 Nov 1991 3 Feb 1992 →

About this page

Max Kp 7-, Ap 65: No. 490 of 34,615 days since 1932 by Ap.