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Geomagnetic activity in August 2017
Mean Ap10.5No. 704 of 1138
G1+ days7
G3+ days0
Max Ap3031 Aug 2017
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 17 Aug 2017 | 5- | 24 | G1 |
| 18 Aug 2017 | 5- | 20 | G1 |
| 19 Aug 2017 | 5- | 29 | G1 |
| 20 Aug 2017 | 5o | 20 | G1 |
| 22 Aug 2017 | 5- | 17 | G1 |
| 23 Aug 2017 | 5- | 23 | G1 |
| 31 Aug 2017 | 5+ | 30 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 2016 | 9.6 | 4 | 0 |
| August 2017 | 10.5 | 7 | 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 10.5 in August 2017, No. 704 of 1138 months since 1932; 7 days reached G1 or higher.