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Geomagnetic storm on 21 Mar 1974 (G3)
Max Kp7-G3
Ap68No. 8 in 1974
Consecutive G1+ days6
Ap rank446since 1932
Kp by 3-hour slot (UTC)
4+
5+
4o
5+
5+
6+
7-
7-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Mar 1974 | 1o | 3 | – |
| 19 Mar 1974 | 2o | 2 | – |
| 20 Mar 1974 | 6+ | 23 | G2 |
| 21 Mar 1974 | 7- | 68 | G3 |
| 22 Mar 1974 | 6o | 39 | G2 |
| 23 Mar 1974 | 6o | 42 | G2 |
| 24 Mar 1974 | 5+ | 34 | G1 |
Highest-Ap days of 1974
130
88
86
82
74
73
70
68
68
54
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 68: No. 446 of 34,615 days since 1932 by Ap.