Polar vortex bringing deep freeze to LI; temperatures expected to drop to 10 degrees
Temperatures are expected to plummet on Long Island as whats known as a polar vortex chills the United States.
The huge arctic air mass is heading from Canada to the U.S. and bringing with it the coldest temperatures in decades.
The dangerous cold has already hit the Midwest, where it was 15 below in Minneapolis.
Temperatures will fall to around 10 degrees by Tuesday morning. Wind...