The National Weather Service
The National Weather Service

http://www.weather.gov/

The National Weather Service is an agency of the United States government, which is a part of the United States department of Commerce that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information. It is a part of the National Oceanic and Atmospheric Administration branch of the Department of Commerce, and is headquartered in Silver Spring, Maryland. The agency was known as the United States Weather Bureau from 1870 until it adopted its current name in 1970.