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* Light to Moderate Rain & Snow to continue through Sunday Evening *

Heavy Rain / Potential Flooding: Heavy rainfall has already fallen since Friday night. Here is a comprehensive list of 2-day totals through Sunday morning along with a revised list of CoCoRaHS observer reports over the same time frame . Flood and flash flood watches remain in effect for many portions of central and south-central Wyoming through late Sunday afternoon.  Additional rainfall of 0.25 inches is possible in central Wyoming SundayPortions of western & southwest Wyoming may see 0.5 to 1.5 inches of precipitation by early Monday morning. Some rivers in central Wyoming are in flood stage Sunday morning.  Other small streams and creeks have the potential to flood and there will be an increased threat for rock and mudslides in area canyons. Travelers can keep up-to-date with current road conditions by visiting

General Impacts 

Heavy rains may cover roadways, causing travel difficulties. Travelers are encouraged to remember to "Turn Around Don't Drown!" Mountain passes may become snow-covered and slick.  Significant rainfall may also cause rock or mudslides in canyons. The Wind River Canyon will be especially susceptible to rock and mudslides.
Significant rainfall will result in street flooding across the area, and land grading may result in some water coming into susceptible buildings and houses. 

Those with outdoor plans will want to prepare for soggy conditions, or snowfall over the higher elevations.  Most cases of hypothermia occur in the warm season when people are outdoors and exposed to wet and cold conditions. 


Precipitation and River Forecasts

Here are the latest graphics dealing with rain and snow through Sunday. (click for a larger view):

Weather Story and Outlook
Forecast Precipitation
12 pm Sunday thru 6 am Monday
Snowfall Totals Expected by
6 am Monday, May 9
Current Watches and Warnings
as of 2 pm Sunday, May 8
Current Stage and Forecast
for WInd River at Riverton
Current Stage and Forecast
for Little Wind River near Riverton


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Want to track the storm? Here are the local and regional radar loops:

Northeast Wisconsin Radar  



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