Aurora & Space WeatherGeomagnetic activity in 1951
Mean Ap22.3
G1+164days
G3+26days
G52days
G1+ days by month
- January 1951
- February 1951
- March 1951
- April 1951
- May 1951
- June 1951
- July 1951
- August 1951
- September 1951
- October 1951
- November 1951
- December 1951
Nearby years (G1+ days)
102
111
94
92
123
164
150
108
52
63
122
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Sep 1951 | 8+ | 116 | G4 |
| 20 Sep 1951 | 7+ | 106 | G3 |
| 28 Oct 1951 | 9- | 98 | G5 |
| 17 Oct 1951 | 7o | 91 | G3 |
| 21 Sep 1951 | 7o | 88 | G3 |
| 22 Sep 1951 | 7o | 85 | G3 |
| 2 Jul 1951 | 8- | 82 | G4 |
| 16 Sep 1951 | 7- | 82 | G3 |
| 26 Sep 1951 | 9- | 73 | G5 |
| 2 May 1951 | 7+ | 68 | G3 |
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
1951 had 164 G1+ storm days (No. 1 of 95 years) and 26 G3+ days.