'Life-threatening cold' hits parts of US following deadly weekend flooding
Extreme cold warnings were issued for an 11-state swath of the U.S. stretching from the Canadian border to Oklahoma and ...
Ask the Meteorologist: What is a polar vortex?
WRAL meteorologist Chris Michaels explains what a polar vortex is and how it's impacting the United States. WRAL meteorologist Chris Michaels explains what a polar vortex is and how it's impacting the ...