Even as the East Coast digs out from the last blast of winter, a massive snowstorm moving across the Rocky Mountains has prompted winter storm warnings across Utah, Arizona, New Mexico, Colorado, Wyoming, Montana and the Dakotas.

Video: Detroit | Indiana

Up to 20 inches of snow are predicted in Colorado, along with winds that could cause whiteout conditions. Gusts could reach 80 mph.

The storm proved deadly for at least one skier on Thursday, as an avalanche killed a 21-year-old man at the Squaw Valley resort in California.

About 2 feet of snow fell overnight in the mountains around Lake Tahoe, bringing totals at some resorts in the past two weeks to 10 feet.

Search crews were looking for two skiers who went missing Thursday afternoon at the Mount Rose ski resort southwest of Reno, Nev.

Much of northern and southeastern Arizona also came under winter storm warnings. The National Weather Service said as much as 6 inches of new snow had fallen in Flagstaff by late Thursday morning and another 6 inches could accumulate overnight with the coming of the second storm.

About 10,000 Salt Lake City-area residents were left without electricity to light Christmas trees Thursday morning after nearly a foot of snow fell.

Spokane, Wash., broke a record Thursday for most snowfall in the month of December with 46.2 inches of snow. The previous record was 42.7 inches, set in 1996. The weight of snow, ice and water over the past week collapsed the roof of a high school in Olympia.

In the east, winds topping 30 mph knocked down trees and power lines, and blacked out thousands of homes and businesses on Christmas in New Hampshire, two weeks to the day after a devastating ice storm.

Freezing rain across northern Indiana caused authorities to close the full length of the Indiana Toll Road and at least a section of Interstate 65 north of Lafayette.

State Trooper William Jones said the Toll Road across the state's northern tier was shut down about 6:30 a.m. Friday after more than 50 wrecks.

Jones said the highway would not be open until the sun melts the ice or salt trucks can treat the pavement. In his words, the 157-mile highway is "an entire sheet of ice."

The National Weather Service issued a freezing rain advisory for much of northern Indiana until 10 a.m. Eastern time Friday.

Snow and ice weren't the only problems. The weather service confirmed that it was two small tornadoes on Christmas Eve that caused scattered damage in Alabama.