Yosemite is the focus of an updated winter storm warning issued at 6:35 p.m. on Tuesday by the National Weather Service. The warning is valid from 11 p.m. until Thursday, Mar. 13 at 11 p.m.

The National Weather Service issued a winter storm warning at 1:49 p.m. on Tuesday valid from 11 p.m. until Thursday, Mar. 13 at 11 p.m. for the Greater Lake Tahoe Area.

Forecasters warned heavy snow could make roads slick and reduce visibility, making travel in some areas "very difficult to impossible."

On Tuesday at 9:45 p.m. the National Weather Service issued an updated winter storm warning valid from Wednesday 4 p.m. until Saturday, Mar. 15 at 5 a.m. for San Bernardino County Mountains.

Yosemite is included in an updated winter storm warning issued by the National Weather Service on Monday at 8:20 p.m. The warning is valid from Tuesday 11 p.m. until Thursday, Mar. 13 at 11 p.m.

The National Weather Service has issued a winter storm warning for Coconino County through 5 p.m. March 7. Heavy snow was expected above 5,000 feet. Total snow accumulations between 1 and 12 inches were expected.

EST the National Weather Service issued a winter storm warning valid for Wednesday between 1 a.m. EST and 7 p.m. EST for Iron County.