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Geomagnetic storm on 18 Dec 1958 (G3)
Max Kp7oG3
Ap33No. 47 in 1958
Consecutive G1+ days3
Ap rank2,419since 1932
Kp by 3-hour slot (UTC)
7o
6-
3o
3-
3+
1+
1o
3-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 15 Dec 1958 | 3+ | 10 | – |
| 16 Dec 1958 | 4+ | 16 | – |
| 17 Dec 1958 | 6+ | 30 | G2 |
| 18 Dec 1958 | 7o | 33 | G3 |
| 19 Dec 1958 | 5- | 21 | G1 |
| 20 Dec 1958 | 3+ | 15 | – |
| 21 Dec 1958 | 3- | 8 | – |
Highest-Ap days of 1958
200
199
131
103
89
85
82
82
77
75
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 33: No. 2,419 of 34,615 days since 1932 by Ap.