Weather
NOAA's National Weather Service The National Ocianic Atmospheric Administration or NOAA has an Aviation Weather Center where you can find just about any piece of aviation weather information you could want including: Start your self weather briefing with a 7 Day Overall Forecast . The Aviation Digital Data Service (ADDS) includes graphic information on... Turbulance Icing Convection Satellite Metars TAFs Prognosis Charts Radar US Air Net A great source for hour by hour data is US Air Net . On this site you can find sky condition, wind velocity and direction, ceiling, temperature, dew point, and precipitation on an hour by hour basis. Great for preliminary flight planning.