The highway closed after rocks covered the northbound lane at mile 111, near McHugh Creek. A second rock slide was reported near mile 106.5.

Anchorage sidewalks were slick with ice and the roads were full of puddles because of unseasonably high temperatures.By mid morning the temperature had reached 46 degrees.

A windstorm pounded parts of Southcentral Alaska early Monday, knocking down trees and cutting off power for thousands of people from the Matanuska Valley to the Kenai Peninsula.

A second major wind storm in less than two weeks swept through Alaska's largest city on Sunday, but unlike the earlier storm, its greatest intensity was mostly on higher elevations where gusts as high as 120 mph were reported, weather forecasters said.