Dangerously cold weather will put much of the United States into a deep freeze over the weekend as temperatures are expected to plunge by up to 40 degrees behind an Arctic air mass.

NASHVILLE, Tenn. (WKRN) — Another bout of significant cold air will impact the region early next week. Temperatures will be 20-30 degrees below average, with the worst of the cold happening in the morning hours of Monday and Tuesday.

The arctic air is coming, but not yet. See the timeline for when we expect temperatures to drop. A deep freeze, thanks to the polar vortex dipping down from Siberia, will bring frigid temperatures to nearly 300 million Americans.

Snow continues, especially in the morning, before becoming more scattered in the afternoon. Widespread 3-6″ of snow is expected, especially along and just west of I-25, locally more. Travel will be impacted,