Flood Potential Outlook
Issued by NWS Billings, MT

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Hydrologic Outlook
National Weather Service Billings MT
240 AM MST Thu Feb 1 2024


...Overland and Ice Jam flooding possible due rainfall on frozen
ground...

A storm system is expected to bring a mix of rain and snow this
weekend. At elevations under 5000 feet precipitation may be mainly
rain, and in other areas any snow that falls will melt quickly. With
the ground frozen in most locations, this water will not be able to
soak into the ground and will all runoff. Any rain that falls on
snowpack in the foothills will likewise runoff rapidly. This water,
flowing overland and accumulating in low lying areas, may result in
localized flooding. Runoff flowing into ice covered creeks and
streams will increase the potential for ice jam development, and may
result in additional flooding near waterways.

Water may accumulate near home foundations increasing the chance of
basement flooding. Plugged culverts, ditches, and storm drains may
result in water on area roadways at times. Water flowing into creeks
and streams will increase the potential for ice jam development with
additional flooding hazards near waterways. Unpaved roads may
suddenly thaw and become muddy and impassable. The severity of
impacts will depend on how how much precipitation falls as rain or
melting snow, and how fast the ground thaws.

While flooding is not imminent, now is the time to move equipment
and livestock out of low lying areas, and away from waterways. Move
any accumulations of snow away from structures and take steps to
prevent water from making it into basements. Do not drive over
flooded roadways as the roadbed may be washed out. Be especially
careful driving at night when water covered roadways are less
visible.

Stay tuned to the forecast for the latest temperature and
precipitation trends, along with any warnings or advisories that may
be issued. Please report any flooding to local law enforcement and
have them relay the report to the National Weather Service.

$$


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