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Geomagnetic activity in September 2016
Mean Ap14.5No. 392 of 1138
G1+ days8
G3+ days0
Max Ap372 Sep 2016
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Sep 2016 | 5o | 28 | G1 |
| 2 Sep 2016 | 6o | 37 | G2 |
| 3 Sep 2016 | 6- | 36 | G2 |
| 5 Sep 2016 | 5- | 17 | G1 |
| 27 Sep 2016 | 6- | 35 | G2 |
| 28 Sep 2016 | 6- | 36 | G2 |
| 29 Sep 2016 | 5+ | 36 | G1 |
| 30 Sep 2016 | 5o | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 2015 | 15.8 | 7 | 2 |
| September 2016 | 14.5 | 8 | 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 14.5 in September 2016, No. 392 of 1138 months since 1932; 8 days reached G1 or higher.