Aurora & Space WeatherHome › Geomagnetic history › 1939
Geomagnetic storm on 28 Mar 1939 (G3)
Max Kp7-G3
Ap56No. 16 in 1939
Consecutive G1+ days4
Ap rank696since 1932
Kp by 3-hour slot (UTC)
4-
4o
3+
4-
5+
6+
6+
7-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Mar 1939 | 3o | 7 | – |
| 26 Mar 1939 | 3+ | 12 | – |
| 27 Mar 1939 | 5+ | 26 | G1 |
| 28 Mar 1939 | 7- | 56 | G3 |
| 29 Mar 1939 | 6+ | 71 | G2 |
| 30 Mar 1939 | 5+ | 32 | G1 |
| 31 Mar 1939 | 4+ | 20 | – |
Highest-Ap days of 1939
135
133
94
92
89
89
88
79
74
73
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 56: No. 696 of 34,615 days since 1932 by Ap.