Area Forecast Discussion
Issued by NWS Glasgow, MT

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903
FXUS65 KGGW 141635
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
935 AM MST Thu Dec 14 2017

.DISCUSSION...

We made some minor tweaks to PoP`s to speed the exit of snow
showers over the southeast zones. Current radar trends indicate
just some lingering light activity over the Wibaux vicinity. Rest
of forecast in good shape. BT

...Previous Discussion Below...

The upper flow pattern over the next couple of days looks very
similar to the past few days providing northwest flow over
northeast Montana given an adjacent ridge to the west and trough
to the east. Cloudiness and a few snow showers, especially this
morning, will remain probable east of Fort Peck Lake today. Clear
skies will be more likely further west closer to the influence of
the upper ridge.

The upper ridge axis will shift east and extend into northeast
Montana on Friday. Still just on the northern periphery of this
feature, partly to mostly cloudy skies will still prevail,
however, expect milder temperatures with the associated height
rises. In fact, highs will range from the mid 40s to the mid 50s
area-wide.

A fairly pronounced shortwave will approach on Saturday and
Saturday night bringing a surface cold front through the area
along with it. Models keep most of the moisture downstream of the
CWA but enough forcing for ascent to maintain chance pops. Any
snow showers would be light with little in the way of
accumulations. In any event, colder temperatures will return for
the weekend with highs in the 30s and lows in the 10s and 20s.

Latest 00z models continue with a progressive pattern into the
middle of next week as a new ridge builds in for Monday and
Tuesday with dry weather conditions before the new trough reaches
the Pacific shore. This trough may influence northeast Montana
sometime late next week with a little light snow, though models
differ in timing and evolution of this feature at these large time
scales. Will keep the forecast trending toward consensus model
blends at this time. Maliawco


&&

.AVIATION...
Expect VFR to MVFR CIGS to prevail today with northwest winds
ranging from 10 to 20 kts. Winds will switch southwest this
evening after 00Z from 5 to 10 kts. BT/Maliawco

&&

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

&&

$$

weather.gov/glasgow



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