The worst conditions will likely happen Tuesday and Wednesday, mainly from west of Denver in Colorado to southern Idaho, western Wyoming, southern Montana and eastern Nevada. Total snow amounts will depend on exact location and elevation, but some areas could see up to 12 inches while other locations get only a few inches.
Wind gusts could exceed 40 mph at times, with periods of blowing snow and reduced visibility.
The National Weather Service had not issued any winter weather alerts as of early Monday, but this could change. Truckers will have to be ready to chain up in the impacted areas. Snow showers could linger in some parts of the Rockies later in the week.