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Geomagnetic storm on 20 Mar 1973 (G3)
Max Kp7-G3
Ap80No. 4 in 1973
Consecutive G1+ days10
Ap rank303since 1932
Kp by 3-hour slot (UTC)
5+
6-
6-
7-
6-
6-
7-
6+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 17 Mar 1973 | 2o | 6 | – |
| 18 Mar 1973 | 5o | 20 | G1 |
| 19 Mar 1973 | 7o | 82 | G3 |
| 20 Mar 1973 | 7- | 80 | G3 |
| 21 Mar 1973 | 6o | 58 | G2 |
| 22 Mar 1973 | 6o | 53 | G2 |
| 23 Mar 1973 | 6- | 50 | G2 |
Highest-Ap days of 1973
91
86
82
80
80
63
60
59
58
57
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 80: No. 303 of 34,615 days since 1932 by Ap.