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Geomagnetic storm on 28 Mar 1957 (G3)
Max Kp7oG3
Ap58No. 21 in 1957
Consecutive G1+ days4
Ap rank657since 1932
Kp by 3-hour slot (UTC)
7o
7-
6+
6-
3+
4o
2+
1+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Mar 1957 | 6o | 31 | G2 |
| 26 Mar 1957 | 4- | 13 | – |
| 27 Mar 1957 | 7o | 44 | G3 |
| 28 Mar 1957 | 7o | 58 | G3 |
| 29 Mar 1957 | 8- | 77 | G4 |
| 30 Mar 1957 | 6- | 21 | G2 |
| 31 Mar 1957 | 4+ | 20 | – |
Highest-Ap days of 1957
164
160
150
145
139
135
132
112
104
102
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 58: No. 657 of 34,615 days since 1932 by Ap.