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Geomagnetic activity in December 1955
Mean Ap8.1No. 924 of 1138
G1+ days4
G3+ days0
Max Ap221 Dec 1955
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Dec 1955 | 5+ | 22 | G1 |
| 25 Dec 1955 | 5- | 19 | G1 |
| 26 Dec 1955 | 5o | 18 | G1 |
| 27 Dec 1955 | 5- | 17 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 1954 | 6.4 | 2 | 0 |
| December 1955 | 8.1 | 4 | 0 |
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 8.1 in December 1955, No. 924 of 1138 months since 1932; 4 days reached G1 or higher.