A fast-moving weather system coming in from the west hasn't meant much for the Valley, but it's wreaking havoc for some motorists in northern Arizona.
Arizona Department of Public Safety officials issued a winter travel advisory in northern Arizona through 6 a.m. on Thursday. Authorities say officers are already investigating several weather-related collisions and cars sliding off the road.
State Route 180 to Snowbowl was jammed on and off Wednesday.
Sgt. Robert Lee Bailey, a DPS spokesman, said there were at least seven weather-related incidents, including injury collisions, in Coconino County as of roughly 5 p.m. Wednesday.
He said there were also a handful of wrecks officials were dealing with in Yavapai County, including two on Interstate 17 near the border of Yavapai and Coconino counties and a slide-off on state Route 89A.
"It hasn't been overwhelming, but we've been fairly consistent through the day with slide-offs on 89A, I-17, and I-40," he said.
"The calls just kind of keep coming in," he added.
DPS warned of snowy conditions and subfreezing temperatures going into the weekend.
Officials are advising motorists to check weather and road conditions before heading north by calling 511 or going to www.az511.gov.
The National Weather Service said snow was likely to continue into Wednesday in northern areas of the state, including Flagstaff. Meteorologist Mike Bruce said the Valley is going to continue seeing clouds until the system leaves by Thursday.
"We're expecting fair weather and a gradual warming trend through the weekend," he said.
Thursday's high at Sky Harbor is expected to hit 65 degrees, with an overnight low of 42 degrees, he said. Friday should see a high of 68. Saturday and Sunday should both see highs of 70, before temperatures dip down to 67 on Monday, 65 on Tuesday and 66 on Wednesday.