A polar air mass is expected to send temperatures to record lows into the weekend, prompting frostbite warnings.
Arctic Blast To Invade The US, Subzero Cold In Many Places - Videos from The Weather Channel
Generational' Arctic blast hits Northeast US, Canada, Weather News
Historic winter blast batters U.S. and Canada ahead of holiday
Severe cold snap defies El Niño, brings extreme chill, snow to the
January–February 2019 North American cold wave - Wikipedia
A severe arctic storm could threaten holiday travel across the
Winter storm to bring bitter cold, disrupt holiday travel across U.S.
EXPLAINER: Arctic blast sweeps US, bomb cyclone possible
Environment Canada warns of extreme winter weather
Winter storm: Millions of Americans face below-zero temperatures
Arctic blast bringing temperatures of -50F - 78 degrees below normal - is forecast to strike West and Midwest next week
