Area Forecast Discussion
Issued by NWS Glasgow, MT

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235
FXUS65 KGGW 140921
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
221 AM MST Sat Dec 14 2019

.DISCUSSION...

NE winds will combine with temperatures near zero or slightly
below to create wind chills around -20 over the NE corner of the
state this morning. Will keep Wind Chill Advisory in effect for
Sheridan County until noon.

A moist atmosphere will remain over NE Montana today. Weak waves
in NW flow aloft will allow for light snow at times across the
region.

Surface high pressure moves in tonight and Sunday with dry
weather. Lingering low level moisture will keep varying degrees of
low clouds over the area with some breaks at times.

NW flow aloft will continue on Monday with dry weather. Then, an
upper ridge moves into Montana on Tuesday and remains over the
state on Wednesday. Temperatures will gradually warm but snow
cover and low level inversions will limit the warming.

A shortwave trough is expected to flatten the ridge on Thursday
and nearly zonal flow prevails the remainder of the week with most
of the moisture staying west of the Continental Divide. Forrester


&&

.AVIATION...
FLIGHT CATEGORY: VFR/MVFR.

DISCUSSION: Areas of light snow will continue across NE Montana
today. A mix of low and mid level clouds will remain over the
region today and tonight with MVFR and VFR level ceilings. East to
NE winds today will be 5 to 10 knots with light and variable winds
expected tonight.


&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...
Wind Chill Advisory until noon MST today for Sheridan.

&&

$$

weather.gov/glasgow



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