Northern Sweet Grass Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flood Warning
Issued: 11:45 AM MDT May. 23, 2018 – National Weather Service

The National Weather Service in Billings has issued a

* Flood Warning for
the Boulder river at Big Timber affecting Sweet Grass County.
* From this evening until further notice... or until the warning is
cancelled.
* At 11 am Wednesday the stage was 6.8 feet.
* Flood stage is 7.5 feet.
* Minor flooding is forecast.
* Forecast... the river will rise above flood stage around 3 am
Thursday and crest near 7.6 feet around 6 am Thursday. The river
is expected to stay near or above flood stage through early next
week.

             Flood observed forecast 12 PM
location stage stage day time Thu Fri Sat

Boulder river
Big Timber 7.5 6.8 Wed 11 am 7.5 7.3 7.3




Lat... Lon 4585 10990 4571 10997 4564 11009 4567 11013
      4573 11002 4585 10995




Areal Flood Watch
Issued: 1:08 PM MDT May. 23, 2018 – National Weather Service

... Flood Watch remains in effect through late tonight...

The Flood Watch continues for

* portions of Montana and north central Wyoming... including the
following ... in Montana... Big Horn... Carbon... Golden
Valley... Musselshell... park... Stillwater... Sweet Grass...
Wheatland and Yellowstone. In north central Wyoming... Sheridan.

* Through late tonight

* periods of showers and thunderstorms will continue through
tonight. Widespread rainfall totals of 1 to 1.50 inches have been
observed, with local reports greater than 3 inches. Flooding is
possible along mainstem rivers and tributaries already running
high due to snowmelt. Some flooding of ditches and low lying areas
is also possible.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible flood
warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop. Bank erosion is
likely. Do not walk near river banks as the underlying soil may be
eroded. In addition, if encountering flooded roads, turn around
don't drown.





Areal Flood Watch
Issued: 1:08 PM MDT May. 23, 2018 – National Weather Service

... Flood Watch remains in effect through late tonight...

The Flood Watch continues for

* portions of Montana and north central Wyoming... including the
following ... in Montana... Big Horn... Carbon... Golden
Valley... Musselshell... park... Stillwater... Sweet Grass...
Wheatland and Yellowstone. In north central Wyoming... Sheridan.

* Through late tonight

* periods of showers and thunderstorms will continue through
tonight. Widespread rainfall totals of 1 to 1.50 inches have been
observed, with local reports greater than 3 inches. Flooding is
possible along mainstem rivers and tributaries already running
high due to snowmelt. Some flooding of ditches and low lying areas
is also possible.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible flood
warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop. Bank erosion is
likely. Do not walk near river banks as the underlying soil may be
eroded. In addition, if encountering flooded roads, turn around
don't drown.





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