Flood Potential Outlook
Issued by NWS Great Falls, MT

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Hydrologic Outlook
National Weather Service Great Falls MT
407 PM MDT Mon May 14 2018

...Snowmelt flooding risk to increase again starting mid-week as
scattered showers redevelop across north central and southwest
Montana...

Although many rivers and creeks across north central and southwest
Montana had receded somewhat through early this week, flooding
continues to be a concern for later in the week.

Daytime temperatures will warm through mid-week to levels more
common in mid- to late-June. This will likely increase snowmelt
out of the higher mountain elevations. Also, a weather system will
bring a good chance for rain showers to the area Wednesday
through Friday.

The snowmelt will keep area rivers and creeks at least running
high and fast, especially near mountains. The rainfall will then
likely cause additional flooding of fields and low-lying areas,
and it could cause some of these rivers and creeks to flow out of
their banks.

Some river gauge points that may approach or exceed flood stage
later this week into early next week include, but are not limited
to:

In southwest Montana:
Big Hole River near Melrose...
Jefferson River near Three Forks...
Gallatin River at Logan...
Missouri River at Toston...

In north central Montana:
Sun River near both Simms and Vaughn...
Badger Creek near Browning...
St. Mary River at International Boundary...
Missouri River near Landusky...

Please continue to monitor future flood statements for updates on
this ever-changing situation. Also, please have a plan-of-action
for long-term rises on rivers and streams through at least the
remainder of this month, and possibly well into June as well.

$$



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