A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.
Extreme cold could expose residents of several states to conditions like hypothermia and frostbite over the weekend.
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.
The United States satellite images displayed are infrared ... of gaps in data transmitted from the orbiters. This is the map for US Satellite. A weather satellite is a type of satellite that ...
Parts of the country remain under cold weather advisories and freezing warnings today, as the NWS warns of dangerous wind ...
A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.