Snow in the Rockies; Showers and Thunderstorms Along the Gulf Coast; Potential Winter Storm for Northern Mid-Atlantic and Interior New England

A winter-like pattern will continue over much of the Lower 48 over the next few days, with snow stretching from the Rockies today into the Middle Mississippi Valley on Monday. Showers and thunderstorms will develop along the Gulf Coast and Southeast on Monday. As the storm moves northward late Monday into Tuesday, winter weather is possible from the Central Appalachians to Interior New England. Read More >

Impacts: Rain and Snow showers will continue to increase across the western mountains and valleys Sunday evening. A strong cold front will push across western Wyoming around 5 am Monday morning. Snowfall rates will be highest across the western mountains and valleys with this frontal passage through morning commute time Monday. Travel over Teton Pass, Togwotee Pass and South Pass will likely be treacherous Monday morning with heavy snow along with blowing and drifting snow.

Snow will also spread along the Interstate 80 corridor with the advancing cold front Monday morning with conditions becoming slick along with limited visibility in snow and blowing snow.

The cold front will also spread scattered snow showers into the central basins Monday and Monday night. Snow showers are expected to be most numerous across the Bighorn Basin, Bighorn Mountains and eastern Johnson county Monday afternoon and Monday night. Interstates 90 and 25 across Johnson County will likely become slick with limited visibility in heavier snow showers Monday afternoon and Monday night.

Snow Accumulations (Sunday night through 6 am Tuesday):

Teton Mountains, Gros Ventre Mountains, Western Wind River Mountains, Salt River and Wyoming Ranges...10 to 20 inches
Jackson Hole and Star Valleys....5 to 10 inches
Rock Springs...2 to 4 inches
Upper Green River Basin...2 to 6 inches
Areas east of the divide...Trace to 1 inch.

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Snow in the Rockies; Showers and Thunderstorms Along the Gulf Coast; Potential Winter Storm for Northern Mid-Atlantic and Interior New England

Snow to Impact Western Wyoming Tonight and Monday, and Portions of Central Wyoming Monday and Monday Night