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Geomagnetic storm on 27 Apr 1955 (G4)

Max Kp8-G4

Ap54No. 4 in 1955

Consecutive G1+ days3

Ap rank753since 1932

Kp by 3-hour slot (UTC)

00–034-

03–063+

06–093-

09–121-

12–151+

15–185-

18–218-

21–247+

The days around it

Date	Max Kp	Ap	Level
24 Apr 1955	5o	19	G1
25 Apr 1955	3+	12	–
26 Apr 1955	4o	17	–
27 Apr 1955	8-	54	G4
28 Apr 1955	7o	44	G3
29 Apr 1955	5o	27	G1
30 Apr 1955	4+	16	–

Highest-Ap days of 1955

19 Nov 195565

18 Jan 195559

25 Oct 195556

27 Apr 195554

30 Sep 195554

19 Jan 195553

31 Mar 195553

20 Nov 195547

28 Apr 195544

17 Jan 195543

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 Jan 1955 28 Apr 1955 →

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Max Kp 8-, Ap 54: No. 753 of 34,615 days since 1932 by Ap.