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Geomagnetic activity in December 2023
Mean Ap9.6No. 793 of 1138
G1+ days4
G3+ days1
Max Ap521 Dec 2023
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Dec 2023 | 7- | 52 | G3 |
| 2 Dec 2023 | 5+ | 13 | G1 |
| 17 Dec 2023 | 5+ | 33 | G1 |
| 18 Dec 2023 | 5+ | 23 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 2022 | 11.0 | 5 | 0 |
| December 2023 | 9.6 | 4 | 1 |
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 9.6 in December 2023, No. 793 of 1138 months since 1932; 4 days reached G1 or higher.