Flood Potential Outlook
Issued by NWS Riverton, WY

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FGUS75 KRIW 211451
Hydrologic Outlook
National Weather Service Riverton WY
851 AM MDT Wed Mar 21 2018

...Increased snowmelt runoff below 7500 feet expected
Thursday afternoon through Friday afternoon...

...Flooding of low lying areas possible over Star Valley
and Jackson Hole Thursday night through early
Saturday morning...

Afternoon basin temperatures are expected to warm into the
middle to upper 40s Thursday and Friday across far western
Wyoming. Rainfall up to three quarters inch is forecasted Thursday
afternoon through early Friday morning.

Snow levels are expected to rise to 8500 to 9000 feet by Thursday
afternoon--then drop to near 8000 feet by Friday evening.

Expect noticeable increases in snowmelt runoff below 7500 feet
Thursday afternoon through Friday afternoon. Rain on snowmelt
over Star Valley and Jackson Hole will cause noticeable sharp rises
along small creeks and streams Friday morning through Saturday
morning. Minor flooding is possible along low lying areas.

Residents living along small creeks and streams--especially
in Star Valley--should be vigilant for significant rises in
water levels Friday through Saturday. Road crossings along low lying
areas may become hazardous due to rising waters.

Snowmelt runoff is also expected to increase Thursday afternoon
through Saturday morning across the Greys River Basin to include the
Porcupine Slide area.

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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