2:42 p.m. ET, February 20, 2019
The Grand Canyon could get a foot of snow
From CNN's Dave Hennen
An aerial picture taken on Jan. 3, 2019, shows the Grand Canyon covered with snow in Arizona. (DANIEL SLIM/AFP/Getty Images)
Much of the West is also under some sort of winter watch, warning or advisory from Southern Arizona along the Mexican border north to Montana along the Canadian border.
The heaviest snow is expected in northern Arizona and southern Utah. The Grand Canyon could see a foot of snow over the next few days.
Las Vegas is under a winter weather advisory, with the potential for an inch or two of snow tomorrow.
Rare heavy snow is forecast in the mountains in Southern California. Up to two feet of snow is possible in the mountains outside of San Diego.