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Geomagnetic storm on 28 Jun 1958 (G4)
Max Kp8-G4
Ap55No. 19 in 1958
Consecutive G1+ days2
Ap rank727since 1932
Kp by 3-hour slot (UTC)
2+
3+
4o
4-
3o
5-
7o
8-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Jun 1958 | 4- | 16 | – |
| 26 Jun 1958 | 2+ | 8 | – |
| 27 Jun 1958 | 3o | 8 | – |
| 28 Jun 1958 | 8- | 55 | G4 |
| 29 Jun 1958 | 8o | 103 | G4 |
| 30 Jun 1958 | 3o | 9 | – |
| 1 Jul 1958 | 5o | 17 | G1 |
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 8-, Ap 55: No. 727 of 34,615 days since 1932 by Ap.