Aurora & Space WeatherHome › Geomagnetic history › 2012
Geomagnetic activity in December 2012
Mean Ap3.4No. 1134 of 1138
G1+ days0
G3+ days0
Max Ap1217 Dec 2012
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| – | – | – | – |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2011 | 4.0 | 0 | 0 |
| December 2012 | 3.4 | 0 | 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 3.4 in December 2012, No. 1134 of 1138 months since 1932; 0 days reached G1 or higher.