After a mild Thursday, an arctic blast of extreme cold will arrive in parts of Colorado on Friday afternoon. According to Pinpoint Weather Meteorologist Alden German, snow chances could start to affect the Friday evening commute and the below-freezing temperatures are expected to last for several days in a row.

The City of Denver is extending its severe weather shelter activation into next week. Denver's Department of Housing Stability activated its Cold Weather Shelter plan on Dec. 30 and has extended it until at least 11 a.m. Tuesday, Jan. 21.

Colorado will have a long stretch of below freezing and below-zero wind chills, with several inches of snow likely as well.

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Colorado is getting ready to drop into a dangerous multi-day deep freeze. A surge from the Polar Vortex will be pushing below-zero temperatures across the region with several bursts of snow beginning Friday night.

FOX31 Pinpoint Weather Team Meteorologist Alden German is tracking the dangerously cold weather that's anticipated to stick around the Denver area until Tuesday.