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Geomagnetic storm on 15 May 1969 (G4)
Max Kp8-G4
Ap131No. 1 in 1969
Consecutive G1+ days4
Ap rank76since 1932
Kp by 3-hour slot (UTC)
7+
7-
6-
8-
8-
7o
7o
6+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 12 May 1969 | 4o | 8 | – |
| 13 May 1969 | 5+ | 39 | G1 |
| 14 May 1969 | 7- | 50 | G3 |
| 15 May 1969 | 8- | 131 | G4 |
| 16 May 1969 | 6+ | 43 | G2 |
| 17 May 1969 | 4o | 14 | – |
| 18 May 1969 | 5o | 20 | G1 |
Highest-Ap days of 1969
131
90
79
71
62
60
54
50
47
47
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.
About this page
Max Kp 8-, Ap 131: No. 76 of 34,615 days since 1932 by Ap.