Aurora & Space WeatherHome › Geomagnetic history › 1951
Geomagnetic storm on 21 Sep 1951 (G3)
Max Kp7oG3
Ap88No. 5 in 1951
Consecutive G1+ days20
Ap rank231since 1932
Kp by 3-hour slot (UTC)
6+
6+
6+
7o
6o
6-
6-
6o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Sep 1951 | 5o | 28 | G1 |
| 19 Sep 1951 | 8- | 59 | G4 |
| 20 Sep 1951 | 7+ | 106 | G3 |
| 21 Sep 1951 | 7o | 88 | G3 |
| 22 Sep 1951 | 7o | 85 | G3 |
| 23 Sep 1951 | 6o | 51 | G2 |
| 24 Sep 1951 | 6- | 42 | G2 |
Highest-Ap days of 1951
116
106
98
91
88
85
82
82
73
68
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 88: No. 231 of 34,615 days since 1932 by Ap.