Flood Potential Outlook
Issued by NWS Riverton, WY

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FGUS75 KRIW 111846
ESFRIW
WYC003-013-023-029-035-037-039-121846-
Hydrologic Outlook
National Weather Service Riverton WY
1246 PM MDT Sun Jun 11 2017

...Streams and rivers expected to continue to recede through the end of
next week...

...Renewed rises in streams and creeks by next weekend due to very warm
mountain temperatures...

...Reservoir releases out of Boysen and Fontenelle Reservoirs will
keep The Big Horn and Green Rivers running at high levels
through the end of next week...

Much cooler afternoon mountain temperatures are expected Tuesday through
Thursday with temperatures at the 9,000 foot elevation forecasted to be in
the upper 40s to middle 50s. Precipiation is expected across the Upper Green,
Upper Wind, Shoshone, Snake, and Upper Yellowstone Basins Monday afternoon
through Tuesday afternoon. Snow levels are expected to drop down to 8,500 feet
by Tuesday afternoon.

High flows will continue along creeks and rivers over the Wind, Green,
Shoshone, and Sweetwater Basins through early next week.  However, by the
middle of this next week, flows along a majority of streams and rivers will
be noticeably lower.

Renewed rises can be expected next weekend over streams and rivers across
the Wind, Green, Snake, Shoshone, and Upper Yellowstone Basins as very warm
mountain temperatures are expected by next weekend. There is still enough water
in the snopwpack below 10,000 feet elevation for one more significant
acclerated snowmelt event. Peak river and creek levels are not expected to
be as high as we saw during the last recent accelerated snowmelt event.

Increased reservoir releases out of Boysen and Fontenelle Reservoirs will
keep the Big Horn and Green Rivers flowing at high levels through the end of
next week.   Cities and towns below the reservoirs to include Thermopolis, Worland,
Basin, and Green River will continue to have localized lowland flooding with the
high flows.

Graphical forecasts are available at:
http://water.weather.gov/ahps2/index.php?wfo=riw
Visit weather.gov/riverton and select the rivers & lakes tab for
graphical forecasts and additional information.

$$
jtfahey




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