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Geomagnetic storm on 3 Mar 1947 (G4)

Max Kp8+G4

Ap128No. 1 in 1947

Consecutive G1+ days3

Ap rank85since 1932

Kp by 3-hour slot (UTC)

00–037o

03–065o

06–097-

09–127o

12–156+

15–186-

18–218+

21–248o

The days around it

Date	Max Kp	Ap	Level
28 Feb 1947	3-	7	–
1 Mar 1947	2+	6	–
2 Mar 1947	7o	81	G3
3 Mar 1947	8+	128	G4
4 Mar 1947	7+	82	G3
5 Mar 1947	3+	10	–
6 Mar 1947	2+	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.

← 2 Mar 1947 4 Mar 1947 →

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Max Kp 8+, Ap 128: No. 85 of 34,615 days since 1932 by Ap.