Home › Geomagnetic history › 1991

Geomagnetic storm on 8 Jul 1991 (G4)

Max Kp8oG4

Ap68No. 18 in 1991

Consecutive G1+ days7

Ap rank451since 1932

Kp by 3-hour slot (UTC)

00–032+

03–063-

06–094-

09–124+

12–155-

15–188o

18–217+

21–246-

The days around it

Date	Max Kp	Ap	Level
5 Jul 1991	1+	4	–
6 Jul 1991	3o	8	–
7 Jul 1991	3-	7	–
8 Jul 1991	8o	68	G4
9 Jul 1991	8o	117	G4
10 Jul 1991	5o	19	G1
11 Jul 1991	5o	20	G1

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.

← 17 Jun 1991 9 Jul 1991 →

About this page

Max Kp 8o, Ap 68: No. 451 of 34,615 days since 1932 by Ap.