Home › Geomagnetic history › 1947

Geomagnetic storm on 8 Mar 1947 (G4)

Max Kp8-G4

Ap90No. 4 in 1947

Consecutive G1+ days3

Ap rank216since 1932

Kp by 3-hour slot (UTC)

00–032o

03–063+

06–095+

09–126-

12–158-

15–187+

18–217-

21–247o

The days around it

Date	Max Kp	Ap	Level
5 Mar 1947	3+	10	–
6 Mar 1947	2+	6	–
7 Mar 1947	5-	19	G1
8 Mar 1947	8-	90	G4
9 Mar 1947	7-	46	G3
10 Mar 1947	2+	6	–
11 Mar 1947	3-	6	–

Highest-Ap days of 1947

3 Mar 1947128

17 Apr 1947100

25 Sep 1947100

8 Mar 194790

24 Sep 194790

3 Sep 194784

4 Mar 194782

2 Mar 194781

18 Jul 194780

28 Mar 194775

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.

← 4 Mar 1947 9 Mar 1947 →

About this page

Max Kp 8-, Ap 90: No. 216 of 34,615 days since 1932 by Ap.