Arizona's high country is in for some snow this week, while rain will fall in the desert.

The National Weather Service says a storm will hit western Arizona Thursday afternoon and spread east through Friday morning.

Forecasters say the total amount of snowfall is uncertain, but up to 10 inches is possible around the Mogollon Rim and more could fall in the mountains around the state.

An advisory says snowfall could reach 10 to 14 inches above 7,000 feet, including Mount Lemmon.

Northern Arizona University has pushed back its Friday morning commencement ceremony and combined two scheduled for later in the day because of the storm.

Forecasters say roadways will be slick and snow-covered, and back country roads might become impassable.

Up to three-quarters of an inch of rain could fall in southwestern and central Arizona, with wind gusts of up to 35 mph.