Much of Arizona's water supply starts as mountain snow. Scientists with the Salt River Project measure it to build forecasts.

With two low-pressure weather systems hitting the state, northern Arizona and metro Phoenix anticipated some rain and snow.

"Winter" isn't really a thing here. But the season that passes for it is going by more quickly, one study shows.

A winter storm brought 75 mph gusts and over 6.5 inches of snow to northern Arizona Wednesday, causing slick roads and the closure of southbound I-17 near Munds Park.

Add Yahoo as a preferred source to see more of our stories on Google. Northern Arizona could see up to 12 inches of snow with a cold front bringing rain to metro Phoenix, the National Weather Service ...