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Geomagnetic activity in December 1949
Mean Ap8.7No. 872 of 1138
G1+ days1
G3+ days0
Max Ap249 Dec 1949
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Dec 1949 | 5+ | 24 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 1948 | 13.0 | 9 | 0 |
| December 1949 | 8.7 | 1 | 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 8.7 in December 1949, No. 872 of 1138 months since 1932; 1 days reached G1 or higher.