4 maps show where cold in U.S. will be most dangerous in coming days
Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...
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Polar vortex-related Arctic blast brings "dangerous" cold, snow to U.S.
Erin Davis/Axios Visuals An invasion of frigid air from the Arctic is sweeping south from the Plains and Ohio Valley Sunday, moving towards the Southeast and East. Threat level: The ...