Flood Potential Outlook
Issued by NWS Salt Lake City, UT

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Hydrologic Outlook
National Weather Service Salt Lake City
Flood Potential Outlook
1045 am March 21st, 2018

            Hydrologic Outlook

A significant Atmospheric River Event is forecast to move through
Utah beginning Thursday afternoon and continue through Friday
evening. This event will produce widespread rainfall up to
9000`...with the most significant amounts falling over the Pine
Valley Mountains in Washington County...and the Northern Wasatch
Mountains.

Forecasted rainfall amounts of up to 2 inches are expected across
the Pine Valley Mountains.  Additionally...other drainages
throughout Washington County are anticipated to receive around an
inch widespread.  As a result...all waterways in this area will
experience moderate rises.  Smaller slot canyons and dry washes in
the Zion National Park area are expected to rise and may be hazardous
during the event.

The Northern Wasatch Mountains are also expected to receive 2" of
precipitation resulting in brief river rises...some nearing their
banks...through Friday.  The flow increase is not expected to
produce any flooding...but clogged culverts or debris jams may
produce short term issues.

If you are traveling through any of these areas...please be vigilant
of swift moving waters.  Please monitor any children who may venture
near these dangerous rivers and streams.

Brian McInerney
Hydrologist

$$



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