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Geomagnetic activity in December 2001
Mean Ap8.8No. 868 of 1138
G1+ days2
G3+ days0
Max Ap2324 Dec 2001
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 24 Dec 2001 | 5- | 23 | G1 |
| 30 Dec 2001 | 5- | 21 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2000 | 7.4 | 1 | 0 |
| December 2001 | 8.8 | 2 | 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 8.8 in December 2001, No. 868 of 1138 months since 1932; 2 days reached G1 or higher.