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Geomagnetic activity in December 2003
Mean Ap16.5No. 272 of 1138
G1+ days12
G3+ days0
Max Ap4110 Dec 2003
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Dec 2003 | 6- | 39 | G2 |
| 6 Dec 2003 | 5- | 23 | G1 |
| 8 Dec 2003 | 5+ | 35 | G1 |
| 9 Dec 2003 | 5o | 29 | G1 |
| 10 Dec 2003 | 5+ | 41 | G1 |
| 11 Dec 2003 | 6- | 40 | G2 |
| 12 Dec 2003 | 5- | 25 | G1 |
| 13 Dec 2003 | 5- | 26 | G1 |
| 14 Dec 2003 | 5o | 27 | G1 |
| 15 Dec 2003 | 5- | 25 | G1 |
| 20 Dec 2003 | 5- | 16 | G1 |
| 31 Dec 2003 | 5- | 19 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2002 | 12.7 | 6 | 0 |
| December 2003 | 16.5 | 12 | 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 16.5 in December 2003, No. 272 of 1138 months since 1932; 12 days reached G1 or higher.