Flood Potential Outlook
Issued by NWS Great Falls, MT

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1
FGUS75 KTFX 102031

Hydrologic Outlook
National Weather Service Great Falls MT
231 PM MDT Sat Jun 10 2017

...Late spring storm to bring widespread rainfall to North Central
and Southwest Montana Monday night through Tuesday evening...

A late spring storm will impact North Central and Southwest Montana
Monday night through Tuesday evening.

Widespread rainfall amounts of 1.00 to 2.25 inch are expected
with this storm. However, locally heavier amounts are possible.
The heaviest rainfall is expected to fall over Central Montana
with over 2 inches falling in the Highwood and Little Belt

Precipitation earlier this spring has resulted in elevated river
levels in many areas, so high rainfall amounts may produce flooding
of rivers and streams.

A complicating factor may be the occurrence of rain on top of any
remaining mountain snow. Significant amounts of snow remain in the
mountains. Rainfall on top of this snow could cause rapid melting and
additional runoff into mountain streams.

Confidence is high in the timing of this storm, and moderate to high
in the amount of rainfall forecast. Anyone that has interests near
rivers, streams, or reservoirs should closely monitor subsequent
forecasts and statements on this developing spring storm.


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.