Home › Geomagnetic history › 1947

Geomagnetic storm on 15 Aug 1947 (G3)

Max Kp7+G3

Ap55No. 23 in 1947

Consecutive G1+ days12

Ap rank718since 1932

Kp by 3-hour slot (UTC)

00–031o

03–061o

06–092o

09–126-

12–156-

15–186o

18–215+

21–247+

The days around it

Date	Max Kp	Ap	Level
12 Aug 1947	5o	28	G1
13 Aug 1947	5+	26	G1
14 Aug 1947	5-	12	G1
15 Aug 1947	7+	55	G3
16 Aug 1947	7+	54	G3
17 Aug 1947	6o	58	G2
18 Aug 1947	6+	60	G2

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.

← 18 Jul 1947 16 Aug 1947 →

About this page

Max Kp 7+, Ap 55: No. 718 of 34,615 days since 1932 by Ap.