A large dip in the jet stream will support a large snowstorm for the Central Rockies between Friday and Monday. A ridge in the jet stream will leave the Northeast with warmer temps and dry weather this weekend not changing until Monday.
Colorado, Utah and Wyoming: This is where the best new snow will fall between Thursday and Monday. Utah and Wyoming's best snow is Thursday and Friday with lingering snow Saturday and Sunday. Colorado is ground zero with new snow starting late Thursday and continuing on Friday, Saturday, Sunday and Monday. Significant ski area grand totals for Vail, Breckenridge, Loveland and Winter Park.
Idaho and Montana: Both are on the periphery of this storm system with new snow on Thursday and early Friday, then drier for the weekend. Some of the precipitation may fall as rain in the valleys. Moderate snow accumulations at Schweitzer, Sun Valley, Big Sky, Whitefish and Discovery.
California: Light to moderate snow in Northern California on Thursday and Friday, then drier on Saturday and Sunday. Accumulations look light at Tahoe. Much drier as you go south towards Mammoth.
Pacific Northwest: Moderate to heavy snow accumulations above 3,500 feet with rain in the valleys. Then drier Saturday, Sunday and Monday.
Northeast: A rather dry weekend with gradually warming temperatures. Next chance of rain/snow arrives on Monday with a cold front.