Winter weather is roaring into Colorado this week, with big snow and a drop in temperature expected.

According to mapping from the National Weather Service, the most likely snowfall scenario will mean at least 8 inches of snow across the state’s mountainous terrain through Friday morning.

Many of Colorado’s mountains should see much more than that, though, with widespread totals between 18 inches and 36 inches expected. Favored areas will include Aspen, Steamboat Springs, and much of the San Juans, with most of the snow falling between Tuesday and Wednesday.

It’s also worth noting that the agency’s “high-end” snowfall forecast (10% chance) depicts what would be a much more impactful winter storm situation. If this scenario unfolds, peaks in the Aspen area could get more than 48 inches of snow, with Wolf Creek Pass looking at about 42 inches. Accumulation totals above 18 inches would be widespread across Colorado’s west.

In both the “expected” and “high-end” snowfall scenarios, the National Weather Service calls for little-to-no snow along the I-25 corridor. Impacts related to this round of wintery weather should be mostly limited to those traveling in Colorado’s mountainous terrain.

Various winter storm warnings and winter weather advisory alerts have been activated in western Colorado, with officials warning that travel this week could be difficult to impossible.

According to the OpenSnow report, Wolf Creek ski area should get the most snow between Tuesday and Saturday – about 45 inches. Meanwhile, Purgatory should get about 31 inches and Crested Butte could get 28 (find a full resort-by-resort breakdown here).

As of the morning of Feb. 17, Colorado’s statewide snowpack was at 55 percent of the norm – a record low for the date with a snow-water equivalent of 6.2 inches.