Polar vortex brings dangerously cold temps to Minnesota
MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.
Colorado Public Radio1h
With a final sub-zero blast, polar vortex on its way out of Colorado
Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.