Some northern Arizona freeways are now open after winter storms pummeled parts of the High Country this week, causing deadly crashes.

PHOENIX (AZFamily) — It’s a First Alert Weather Day as a strong storm system makes its way through Arizona. Expect rain, snow, thunderstorm potential and cooler temperatures to end the work week.

PARKS, Ariz. (AP) — A winter storm dumped heavy snow across northern Arizona on Friday, playing a major factor in a more than 15-mile backup on a major interstate. Semi-trucks and other vehicles were stalled on Interstate 40 westbound between Flagstaff and Williams late Friday as the sun set. The standstill dragged on for hours.

Another round of winter weather is making its way across Arizona, bringing snow to parts of the high country and rain to other parts of th estate. FOX 10's Nicole Krasean has more, from Flagstaff.

The Arizona Department of Transportation is warning drivers who choose to travel during winter weather of closures they may encounter. As of 4:15 p.m., Interstate 40 eastbound was closed in Kingman and Ash Fork,