Forecast

Weather for 4/9/2012: partly cloudy skies with a 30% chance of thunderstorms and a high of 85, winds 5 to 10mph. Overnight mostly cloudy with a 30% chance of thunderstorms and a low of 55, winds 5 to 10mph

Weather Encylopedia

A

Absolute Humidity: also known as the mass of the water vapor in the air.

Air: A mixture of gasses and other elements of the earth's atmosphere.

Air Mass: An extensive mass of air that expands over the air, where temperatures and humidities are the same.