Flood Potential Outlook
Issued by NWS Great Falls, MT

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FGUS75 KTFX 141840

Hydrologic Outlook
National Weather Service Great Falls MT
1240 PM MDT Sun May 14 2017

...Spring storm with widespread precipitation possible Tuesday
night through Wednesday...

A spring storm is expected to affect much of North Central and
Southwest MT Tuesday night through Wednesday.

Widespread precipitation amounts of 0.50 inches to 1.50 inches,
with isolated higher amounts are possible with this system. The
heaviest precipitation is expected to fall over North Central MT.
In areas that receive the heavier precipitation, some spring
agricultural planting could be affected.

In areas that receive near or over one inch of precipitation, some
flooding could develop. The most likely areas to have any flooding
are small streams and creeks that flow out of the mountains.

Additionally, the Sun and Dearborn Rivers will be elevated. If the
heavy rainfall develops in the mountains west of Augusta, the
precipitation, combined with runoff snowmelt, could result in
significant rises on these rivers, possibly into flood stage.

Note...there is still some uncertainty with this forecast, as the
exact track of the spring storm could be slightly different than
the current forecast track, shifting the location of where the
heavier precipitation falls. Thus anyone that has interests near
waterways should monitor later forecasts and statements on this
developing spring storm.


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