Arctic air is moving into the mountains, bringing snow, strong winds, and bitter cold through the end of the week.
The Weather Channel on MSN
On today's date: The wildest temperature swing ever recorded
On Jan. 14, 1972, powerful Chinook winds caused temperatures in Loma, Montana, to soar 103 degrees in just 24 hours, setting a U.S. record for the largest temperature change in a day.
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