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Geomagnetic storm on 21 Apr 1948 (G3)
Max Kp7-G3
Ap24No. 55 in 1948
Consecutive G1+ days2
Ap rank4,424since 1932
Kp by 3-hour slot (UTC)
7-
4-
3+
2o
1+
2+
1+
3-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Apr 1948 | 3o | 8 | – |
| 19 Apr 1948 | 2o | 5 | – |
| 20 Apr 1948 | 4o | 12 | – |
| 21 Apr 1948 | 7- | 24 | G3 |
| 22 Apr 1948 | 7o | 50 | G3 |
| 23 Apr 1948 | 3- | 7 | – |
| 24 Apr 1948 | 4- | 10 | – |
Highest-Ap days of 1948
146
140
94
86
74
72
67
56
51
50
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 24: No. 4,424 of 34,615 days since 1932 by Ap.