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Geomagnetic storm on 2 Dec 1977 (G3)
Max Kp7oG3
Ap69No. 1 in 1977
Consecutive G1+ days1
Ap rank431since 1932
Kp by 3-hour slot (UTC)
5o
7-
6-
4+
4+
6+
7o
5-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 29 Nov 1977 | 2+ | 6 | – |
| 30 Nov 1977 | 4- | 12 | – |
| 1 Dec 1977 | 3+ | 6 | – |
| 2 Dec 1977 | 7o | 69 | G3 |
| 3 Dec 1977 | 3+ | 9 | – |
| 4 Dec 1977 | 5- | 14 | G1 |
| 5 Dec 1977 | 5- | 18 | G1 |
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 7o, Ap 69: No. 431 of 34,615 days since 1932 by Ap.