Polar vortex swoops over most of US

News

Winter_Weather_Minnesota_84057-159532.jpg68278229 (The Associated Press)

APTOPIX_Winter_Weather_54753-159532.jpg89353799 (The Associated Press)

Winter_Weather_Wisconsin_12439-159532.jpg05758901 (The Associated Press)

Winter_Weather_98174-159532.jpg94897491 (The Associated Press)

Winter_Weather_Michigan_51381-159532.jpg73152713 (The Associated Press)

Winter_Weather_Wisconsin_16335-159532.jpg16194090 (The Associated Press)

Winter_Weather_97838-159532.jpg89542274 (The Associated Press)

Winter_Weather_45172-159532.jpg71691401 (The Associated Press)

Winter_Weather_Chicago_51519-159532.jpg02321198 (The Associated Press)

APTOPIX_Winter_Weather_Chicago_59103-159532.jpg16636129 (The Associated Press)

Winter_Weather_71381-159532.jpg87368160 (The Associated Press)

Winter_Weather_Wisconsin_32382-159532.jpg34488839 (The Associated Press)

Winter_Weather_Wisconsin_03075-159532.jpg01592727 (The Associated Press)

APTOPIX_Winter_Weather_Chicago_69319-159532.jpg48519078 (The Associated Press)

APTOPIX_Winter_Weather_Chicago_60542-159532.jpg23595737 (The Associated Press)

Winter_Weather_Wisconsin_16335-159532.jpg51778302 (The Associated Press)

Winter_Weather_97838-159532.jpg15716047 (The Associated Press)

Winter_Storm_Wisconsin_26585-159532.jpg17743934 (The Associated Press)

Winter_Weather_Illinois_48136-159532.jpg80846703 (The Associated Press)

Winter_Storm_Minnesota_58272-159532.jpg31457093 (The Associated Press)

Winter_Weather_11812-159532.jpg61839241 (The Associated Press)

Winter_Weather_Wisconsin_44269-159532.jpg17312510 (The Associated Press)

Winter_Weather_Wisconsin_13528-159532.jpg81070311 (The Associated Press)