The storm is affecting major transportation routes, including highways in the Greater Lake Tahoe Area and Lassen-Eastern Plumas-Eastern Sierra Counties.

The NWS Reno NV issued an updated winter storm warning at 7:03 p.m. on Thursday in effect until Friday at 10 p.m. for Lake Tahoe.

The National Weather Service issued an updated winter storm warning at 9:54 a.m. EST on Wednesday valid from 1 p.m. EST until Thursday 7 a.m. EST for Alpena, Alcona, Ogemaw, Iosco, Gladwin and Arenac counties.

On Thursday at 8:46 a.m. the NWS Sacramento CA issued a winter storm warning in effect until Friday at 4 a.m. The warning is for Shasta Lake and Mountains Southwestern Shasta County to Western Colusa County as well as Shasta County.

On Thursday at 3:56 p.m. the National Weather Service issued a winter storm warning in effect until Friday at 10 p.m. for West Columbia River Gorge of Oregon above 500 ft, West Columbia River Gorge I-84 Corridor,

In southeast Michigan and the Thumb area, the counties under a warning include Huron, Sanilac, St. Clair and Macomb. To the north, the counties under a warning include Alpena, Alcona, Ogemaw, Iosco, Gladwin and Arenac.

The National Weather Service has issued a winter storm warning for Coconino County starting at 1:04 p.m. Feb. 12.

On Tuesday at 2:37 a.m. an updated winter storm warning was issued by the National Weather Service valid for Wednesday between midnight and 9 p.m. The warning is for Atchison, Doniphan, Leavenworth, Wyandotte,