Alva Review-Courier -

NEW YORK (AP) — An arctic blast is bringing extreme cold, heavy snow and intense wind across much of the U.S. this week — just in time for the holidays.

The weather system, which may build into a "bomb cyclone," is expected to move east in the days leading up to Christmas, disrupting travel and causing hazardous winter conditions. Where is this winter weather coming from, and what's in store for the coming days?

WHAT'S HAPPENING?

A front of cold air is moving down from the Arctic, sending temperatures plunging.

Much of the U.S. will see below-average temperatures through the middle and end of...