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Geomagnetic storm on 18 Feb 1998 (G3)

Max Kp7-G3

Ap36No. 18 in 1998

Consecutive G1+ days2

Ap rank2,077since 1932

Kp by 3-hour slot (UTC)

00–037-

03–065+

06–094o

09–123+

12–153o

15–184o

18–214-

21–243-

The days around it

Date	Max Kp	Ap	Level
15 Feb 1998	3-	3	–
16 Feb 1998	1o	3	–
17 Feb 1998	6-	18	G2
18 Feb 1998	7-	36	G3
19 Feb 1998	2+	6	–
20 Feb 1998	4o	9	–
21 Feb 1998	2o	4	–

Highest-Ap days of 1998

27 Aug 1998144

25 Sep 1998117

4 May 1998101

9 Nov 199875

8 Nov 199866

6 Aug 199864

13 Nov 199864

2 May 199863

3 May 199862

19 Oct 199862

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.

← 23 Nov 1997 10 Mar 1998 →

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Max Kp 7-, Ap 36: No. 2,077 of 34,615 days since 1932 by Ap.