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Geomagnetic activity in December 2014
Mean Ap11.2No. 654 of 1138
G1+ days4
G3+ days0
Max Ap257 Dec 2014
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 7 Dec 2014 | 5- | 25 | G1 |
| 22 Dec 2014 | 5+ | 19 | G1 |
| 26 Dec 2014 | 5- | 17 | G1 |
| 29 Dec 2014 | 5- | 21 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2013 | 4.7 | 1 | 0 |
| December 2014 | 11.2 | 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 11.2 in December 2014, No. 654 of 1138 months since 1932; 4 days reached G1 or higher.