A blast of Arctic air from the polar vortex has brought dangerous, bone-chilling cold to a wide swath of the United States on Tuesday, stretching from the Dakotas through Maine, with snow expected as far south as Alabama and Georgia.Arctic air and icy conditions led schools to close, flights to be cancelled and railway officials to set fires on train tracks to prevent them from cracking.
from rediff News http://bit.ly/2SamjX3
via Rediff News
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