Aurora & Space WeatherHome › Geomagnetic history › 1985
Geomagnetic storm on 28 Feb 1985 (G3)
Max Kp7oG3
Ap60No. 4 in 1985
Consecutive G1+ days3
Ap rank608since 1932
Kp by 3-hour slot (UTC)
6+
7o
7-
5o
5o
4-
3+
2o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Feb 1985 | 4- | 12 | – |
| 26 Feb 1985 | 3- | 5 | – |
| 27 Feb 1985 | 7- | 19 | G3 |
| 28 Feb 1985 | 7o | 60 | G3 |
| 1 Mar 1985 | 5+ | 16 | G1 |
| 2 Mar 1985 | 4+ | 22 | – |
| 3 Mar 1985 | 5- | 14 | G1 |
Highest-Ap days of 1985
103
66
61
60
58
53
52
48
46
46
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 60: No. 608 of 34,615 days since 1932 by Ap.