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Geomagnetic storm on 28 Oct 1977 (G3)
Max Kp7+G3
Ap47No. 10 in 1977
Consecutive G1+ days2
Ap rank1,084since 1932
Kp by 3-hour slot (UTC)
6o
7+
5+
3-
3+
3+
4+
2o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Oct 1977 | 2o | 4 | – |
| 26 Oct 1977 | 3o | 6 | – |
| 27 Oct 1977 | 7- | 62 | G3 |
| 28 Oct 1977 | 7+ | 47 | G3 |
| 29 Oct 1977 | 4- | 9 | – |
| 30 Oct 1977 | 4o | 9 | – |
| 31 Oct 1977 | 2o | 6 | – |
Highest-Ap days of 1977
69
66
64
63
62
61
49
48
48
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 7+, Ap 47: No. 1,084 of 34,615 days since 1932 by Ap.