The National Weather Service (NWS) is an agency of the United States government 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. http://www.weather.gov/ is the National Weather Service home page.
This type of National Weather Service office is responsible for issuing advisories, warnings, statements, and short term forecasts for its county warning area. For example the Dodge City WFO is responsible for the counties in southwest Kansas.
The voice of the National Weather Service, a collection of radios nationwide which broadcast important weather information.