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Geomagnetic storm on 8 May 2005 (G4)

Max Kp8+G4

Ap91No. 3 in 2005

Consecutive G1+ days2

Ap rank213since 1932

Kp by 3-hour slot (UTC)

00–036o

03–065+

06–094-

09–126o

12–158+

15–188-

18–215+

21–244-

The days around it

Date	Max Kp	Ap	Level
5 May 2005	2-	4	–
6 May 2005	2o	4	–
7 May 2005	5-	10	G1
8 May 2005	8+	91	G4
9 May 2005	4-	10	–
10 May 2005	3-	7	–
11 May 2005	4o	12	–

Highest-Ap days of 2005

24 Aug 2005102

11 Sep 2005101

8 May 200591

30 May 200590

15 May 200587

18 Jan 200584

12 Sep 200575

21 Jan 200566

19 Jan 200560

17 Jan 200558

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.

← 5 Apr 2005 15 May 2005 →

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Max Kp 8+, Ap 91: No. 213 of 34,615 days since 1932 by Ap.