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Geomagnetic storm on 17 May 1971 (G3)
Max Kp7-G3
Ap73No. 1 in 1971
Consecutive G1+ days2
Ap rank380since 1932
Kp by 3-hour slot (UTC)
5o
4-
6o
6o
6+
7-
6+
5+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 14 May 1971 | 4- | 14 | – |
| 15 May 1971 | 4+ | 12 | – |
| 16 May 1971 | 3o | 5 | – |
| 17 May 1971 | 7- | 73 | G3 |
| 18 May 1971 | 6o | 39 | G2 |
| 19 May 1971 | 3o | 10 | – |
| 20 May 1971 | 3o | 5 | – |
Highest-Ap days of 1971
73
67
53
50
47
45
43
43
39
39
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 7-, Ap 73: No. 380 of 34,615 days since 1932 by Ap.