Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

On Dec. 27, widespread rain with locally heavy amounts (more than 2 inches) is forecast for eastern Oklahoma ... temperatures across the East, southern Great Plains, and Southwest.

Satellite imagery from the Cooperative Institute for Research in the Atmosphere (CIRA) showed rain and lightning traveling across the Southern Plains of the US on Thursday, January 30.“Sunrise on the ...

A developing winter storm threatens to drop snow, sleet and freezing rain on parts of Texas, Oklahoma and Arkansas ... wintry precipitation across the southern Plains region starting Wednesday ...