Powder Mountain is closed Monday.
Officials said high winds and an unstable snowpack are causing unsafe conditions.
Meteorologists recorded hurricane-force wind gusts of 110 mph at 1:45 a.m.
Officials said the gusts were more than 100 mph from 9 p.m. Sunday to about 3 a.m. Monday.
Sundance Mountain Resort ski lifts after on a temporary hold because of wind gusts Monday.