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Geomagnetic storm on 12 Mar 1990 (G3)
Max Kp7+G3
Ap42No. 20 in 1990
Consecutive G1+ days3
Ap rank1,455since 1932
Kp by 3-hour slot (UTC)
3-
3+
2+
3o
2+
5+
6-
7+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Mar 1990 | 4- | 8 | – |
| 10 Mar 1990 | 3- | 8 | – |
| 11 Mar 1990 | 4- | 14 | – |
| 12 Mar 1990 | 7+ | 42 | G3 |
| 13 Mar 1990 | 6+ | 29 | G2 |
| 14 Mar 1990 | 5+ | 26 | G1 |
| 15 Mar 1990 | 4- | 11 | – |
Highest-Ap days of 1990
124
102
99
89
79
77
76
75
70
69
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 42: No. 1,455 of 34,615 days since 1932 by Ap.