A busy week of Thanksgiving travel lies ahead in Colorado, and according to the National Weather Service, dangerous driving conditions are likely on many of the state’s busiest roads.

While Front Range travel is likely to have fewer impacts compared to those of a major storm that rolled through near the start of November, I-70 is likely to get slammed.

Current mapping shows that more than two feet of snow could land on this route between Monday evening and Wednesday evening, with some of the highest totals expected in the area of Eisenhower Tunnel and Vail Pass – 18 to 27 inches and 15 to 24 inches of snow respectively. In similar scenarios in the recent past, this much snow on these parts of the route have meant extreme travel impacts, including long delays and lane closures. Expect vehicles to be sliding off of the road or failing to make it up steep grades.

Meanwhile, major travel concerns are also expected along US 40, with up to 28 inches of snow possible on Rabbit Ears Pass and up to 27 inches of snow along Berthoud Pass. Up to 23 inches of snow are also expected in the area of Winter Park.

These travel concerns are also accompanied by the possibility of more than 48 inches of snow on peaks southwest of Aspen in a ‘high-end’ snowfall scenario. Even if that ‘high-end’ scenario doesn’t come to fruition, most Colorado peaks should get at least a foot of snow.

The National Weather Service has issued a Winter Storm Warning for much of the state’s mountainous terrain, warning of “very difficult to impossible” travel.

Don’t forget to pack these 22 ‘winter driving survival items’ before your next trip.

Follow along with the National Weather Service website for weather related alerts and updated forecasts.