Flood Potential Outlook
Issued by NWS Riverton, WY

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FGUS75 KRIW 131552
Hydrologic Outlook
National Weather Service Riverton WY
952 AM MDT Tue Mar 13 2018

...Low elevation snowmelt runoff to significantly increase
Thursday through Friday over the western Big Horn Mountains
and along Star Valley...

Afternoon temperatures along the lower elevations of the
western slopes of the Big Horn Mountains are forecasted
to be in the upper 40s to lower 50s on Wednesday and Thursday.
Cooler temperatures with scattered rain showers are expected
Thursday afternoon and evening.

Rain showers and scattered thunderstorms are expected over
Star Valley Wednesday afternoon and evening. The precipitation
will turn to all snow by Thursday morning.

Increased snowmelt runoff will significantly increase below
7500 feet along the western Big Horn Mountains during the late
afternoons and early evenings Thursday through Friday.
Noticeable rises along small creeks and streams along the western
slopes of the Big Horn Mountains may cause minor flooding Wednesday
evening through Saturday morning.

Rain on snowmelt along Star Valley will cause noticeable rises
along small creeks and streams Wednesday night through Thursday
morning. Minor flooding is possible along low lying areas.

Residents living along small creeks and streams should be vigilant
for significant rises in water levels Thursday and Friday.
Road crossings along low lying areas may become impossible due to
rising waters.

Graphical forecasts are available at:
Visit weather.gov/riverton and select the rivers & lakes tab for
graphical forecasts and additional information.


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