Flood Potential Outlook
Issued by NWS Riverton, WY

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FGUS75 KRIW 051954
Hydrologic Outlook
National Weather Service Riverton WY
154 PM MDT Mon Jun 5 2017

...Very warm temperatures and windy conditions along the mountains
Thursday and Friday...

...Increased snowmelt runoff will increase the severity of flooding
of creeks and rivers through end of the week...

...Peak flows and stages along the Big and Little Wind Rivers by
this weekend...

...Snake River near Jackson expected to crest near 26,000 cfs by
this weekend...

Afternoon temperatures at the 9,000 foot elevation are expected to
be near 70 to 75 degrees Wednesday through Friday. Morning low
temperatures will also be well above the frost temperature of 37 degrees
Tuesday through Friday. Windy and very warm mountain temperatures
expected over the mountains on Thursday and Friday.

Accelerated snowmelt runoff will cause continued increases in stream and
river levels through Saturday and Sunday. Very high flows are expected
along creeks and rivers over the Wind, Green, Shoshone, and Sweetwater Basins
by the weekend. Flooding of low lying areas will become more
widespread along creeks and rivers by the end of the week.

The Little and Big Wind Rivers are expected to crest by next weekend.
Peak stage at the Big Wind River at Riverton is expected to be at or slightly
above the record peak stage of 11.8 feet set in July of 2011. The Little Wind
River near Riverton is expected to peak below the record stage of 11.9 feet set in
2010. The Snake River near Jackson is expected to crest near 26,000 cubic feet
per second (cfs) by next weekend---which will be the second highest peak flow
since 1976.

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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