Flooding in Montana, May 1 to 7, 2018

Area Forecast Discussion...UPDATED
National Weather Service Glasgow MT
822 PM MDT Mon Apr 30 2018

.DISCUSSION...
Update:

Very little adjustments made tonight with the clouds very slowly
thinning across the region. Temperatures will be the element with
the main issue and or possible fog patches in the early morning
hours.             Proton

Previous Discussion:

Upper trof over the western states beginning to split. Northern
stream wave moving off to the east, taking showers along the
Canadian border off to the east. Southern portion of the wave
beginning to push showers into southern Montana this afternoon.
These showers could move into the southeast zones overnight but
not expecting them to move too far north.

A second shortwave will swing through the northern stream on
Tuesday, bringing showers across eastern Montana Tuesday night
into Wednesday.

Upper ridge builds over the west coast later in the week with the
trof moving to the east. A wave dipping through western Canada on
Friday could push a back door cold front along with a few showers
for Friday night and Saturday.

A stronger system pushes into the Pacific northwest late in the
weekend which could bring another round of showers and
thunderstorms. Ebert

&&

.AVIATION...
MVFR to IFR conditions expected with low clouds over the region
through tonight. An upper level trough moving over Montana will
spread scattered rain showers out of southern Montana tonight.
These showers could impact KGDV through Tuesday.

&&

.HYDROLOGY...

Flood warnings remain in effect for major forecast points along
the Milk River.

Along the Milk River in Phillips County, from Dodson through
Malta, the river levels are decreasing and are expected to fall
below flood stage this evening. Once the Milk River falls below
flood stage, the flood warning is expected to be cancelled at
Dodson and Malta.

Further downstream, from the Bowdoin through Saco area, moderate
flooding along the Milk River continues. The Milk River has begun
to fall, but is expected to remain in flood until late in the
week.

Through central Valley County, moderate to near major flooding is
persistent and is now at crest or just under the expected crest.
The high water levels at or near crest will prevail through all of
this week.

The last reaches of the Milk River, through the Nashua area will
remain in minor flood stage through at least the next 10 days.

To monitor river stage readings, go to our Advanced Hydrologic
Prediction Service (AHPS) page at www.weather.gov/glasgow then
click on "Rivers and Lakes" then "River Observations". Data for
this page are provided by the USGS.

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

weather.gov/glasgow