![](https://www.hfunderground.com/board/pics/weather_calculator.png)
   iPhone app performs Weather and Meteorology Calculations     
This chart probably says it all, 28 transmissions logged Halloween evening on http://www.hfunderground.com, click to enlarge:
This chart probably says it all, 28 transmissions logged Halloween evening on http://www.hfunderground.com, click to enlarge: