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Geomagnetic activity in July 2017
Mean Ap8.9No. 852 of 1138
G1+ days3
G3+ days0
Max Ap4416 Jul 2017
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Jul 2017 | 5+ | 24 | G1 |
| 16 Jul 2017 | 6o | 44 | G2 |
| 17 Jul 2017 | 6- | 26 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 2016 | 9.2 | 4 | 0 |
| July 2017 | 8.9 | 3 | 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 8.9 in July 2017, No. 852 of 1138 months since 1932; 3 days reached G1 or higher.