Aurora & Space WeatherHome › Geomagnetic history › 2002
Geomagnetic activity in December 2002
Mean Ap12.7No. 536 of 1138
G1+ days6
G3+ days0
Max Ap3727 Dec 2002
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 19 Dec 2002 | 5- | 25 | G1 |
| 20 Dec 2002 | 5- | 21 | G1 |
| 21 Dec 2002 | 6- | 21 | G2 |
| 24 Dec 2002 | 5- | 20 | G1 |
| 26 Dec 2002 | 5- | 15 | G1 |
| 27 Dec 2002 | 6o | 37 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2001 | 8.8 | 2 | 0 |
| December 2002 | 12.7 | 6 | 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 12.7 in December 2002, No. 536 of 1138 months since 1932; 6 days reached G1 or higher.