Aurora & Space WeatherHome › Geomagnetic history › 2001
Geomagnetic activity in August 2001
Mean Ap10.9No. 673 of 1138
G1+ days4
G3+ days1
Max Ap4217 Aug 2001
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Aug 2001 | 5o | 21 | G1 |
| 13 Aug 2001 | 5+ | 22 | G1 |
| 17 Aug 2001 | 7o | 42 | G3 |
| 27 Aug 2001 | 5- | 13 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 2000 | 16.0 | 7 | 1 |
| August 2001 | 10.9 | 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 10.9 in August 2001, No. 673 of 1138 months since 1932; 4 days reached G1 or higher.