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Geomagnetic activity in August 2005
Mean Ap13.9No. 439 of 1138
G1+ days5
G3+ days2
Max Ap10224 Aug 2005
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Aug 2005 | 5- | 29 | G1 |
| 21 Aug 2005 | 5- | 9 | G1 |
| 24 Aug 2005 | 9- | 102 | G5 |
| 25 Aug 2005 | 5o | 22 | G1 |
| 31 Aug 2005 | 7o | 49 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 2004 | 9.3 | 2 | 1 |
| August 2005 | 13.9 | 5 | 2 |
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 13.9 in August 2005, No. 439 of 1138 months since 1932; 5 days reached G1 or higher.