National Weather Service United States Department of Commerce

Dangerous Cold Weather for Most of the Country; Rare Winter Storm for the South; Fire Weather Concerns for Southern California

Arctic air will filter south and east through early this week. As this cold air moves across the South, a rare winter storm is forecast to develop from Texas, Gulf Coast States into the Southeast through early this week. Several new daily record low temperatures are expected, including new record-low maximum temperatures. For Southern California, fire weather concerns increase this week. Read More >

This photo of mammatus clouds was taken by Nez Perce 1H, Ken Anderson looking south from Lewiston on the afternoon of April 14th. Mammatus clouds are smooth and lumpy on the underside of the cloud and indicate high amounts of instability and convection potential in the cloud.

Mammatus clouds over Lewiston