Severe Thunderstorms and Excessive Rainfall in the Central and Southern Plains

Strong to severe thunderstorms may produce heavy to excessive rainfall over portions of the Central/Southern Plains and Mississippi Valley today. There is a Slight Risk (Level 2 of 4) for Excessive Rainfall and a Slight Risk (Level 2 of 5) for severe thunderstorms today. Elevated fire weather conditions are possible over parts of western Florida today. 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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