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Geomagnetic activity in September 2010
Mean Ap5.4No. 1087 of 1138
G1+ days0
G3+ days0
Max Ap1524 Sep 2010
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| – | – | – | – |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 2009 | 3.6 | 0 | 0 |
| September 2010 | 5.4 | 0 | 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 5.4 in September 2010, No. 1087 of 1138 months since 1932; 0 days reached G1 or higher.