Hydrologic Outlook

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Hydrologic Outlook

Hydrologic Outlook

It looks as though the spring runoff will commence finally!

Hydrologic Outlook
Hydrologic Outlook
National Weather Service Riverton WY
157 PM MDT Wed May 3 2017

...Warm basin temperatures across western and central Wyoming Thursday
through Saturday will cause steady rises in small creeks and streams
Friday afternoon through Sunday afternoon...

...Rain expected across western and central Wyoming Tuesday through
Thursday of next week will increase flood potential...

Snowmelt runoff into small streams and creeks will drastically
increase due to warm basin temperatures across western and central
Wyoming Thursday through Saturday. Small streams and creeks will see
steady rises Friday afternoon through Sunday afternoon with the
increased snowmelt runoff.

Afternoon temperatures at the 9000 foot elevation are forecasted
to be into the middle 50s Thursday and into upper 50s to near 60
Friday and Saturday. Temperatures are expected to cool down into
the lower to middle 50s by Sunday afternoon.

Rain develops across western and central Wyoming Sunday night
through Monday night. Snow levels will be around 9500 feet.
A quarter inch of precipitation is expected over the basins with
up to a half an inch over the mountains.

Another round of heavier rain is expected across western and central
Wyoming late Tuesday night through Thursday night.  Amounts look
to be around one half inch to an inch over the lower elevations
and up to one to two inches in the mountains.  Snow levels will be
around 9000 feet.

Tributary creeks and streams may reach bankfull by Sunday morning
through Monday morning due to excess snowmelt runoff and rainfall
runoff. Minor flooding of low lying areas is possible due to the elevated
stream levels. Main stem rivers will see noticeable rises by Sunday
morning with continued rises possible on Monday. Main stem rivers
are expected to remain below flood levels through Monday.

The forecasted rain Tuesday through Thursday will increase flood
potential across western and central Wyoming. Stay tuned for updated
outlooks, advisories, and warnings as we get closer to this developing
rain on snowmelt event.

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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