National Weather Service
![NWS HQ in Silver Spring, Maryland](https://upload.wikimedia.org/wikipedia/commons/c/c2/2016-05-09_17_24_44_National_Weather_Service_headquarters_on_East-West_Highway_%28Maryland_State_Route_410%29_in_Silver_Spring%2C_Montgomery_County%2C_Maryland.jpg)
The NWS performs its primary task through a collection of national and regional centers, and 122 local Weather Forecast Offices (WFOs). As the NWS is an agency of the U.S. federal government, most of its products are in the public domain and available free of charge. Provided by Wikipedia
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