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Geomagnetic activity in December 1951
Mean Ap20.0No. 155 of 1138
G1+ days12
G3+ days1
Max Ap6828 Dec 1951
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Dec 1951 | 5o | 28 | G1 |
| 8 Dec 1951 | 6+ | 55 | G2 |
| 9 Dec 1951 | 6- | 44 | G2 |
| 10 Dec 1951 | 5o | 31 | G1 |
| 11 Dec 1951 | 6- | 32 | G2 |
| 15 Dec 1951 | 5o | 25 | G1 |
| 18 Dec 1951 | 5o | 25 | G1 |
| 22 Dec 1951 | 5+ | 37 | G1 |
| 23 Dec 1951 | 5+ | 18 | G1 |
| 27 Dec 1951 | 5- | 14 | G1 |
| 28 Dec 1951 | 7o | 68 | G3 |
| 31 Dec 1951 | 6- | 38 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 1950 | 15.5 | 9 | 0 |
| December 1951 | 20.0 | 12 | 1 |
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
Mean Ap 20.0 in December 1951, No. 155 of 1138 months since 1932; 12 days reached G1 or higher.