Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 312051

Area Forecast Discussion
National Weather Service Missoula MT
248 PM MDT SUN AUG 31 2014

.DISCUSSION...Tonight showers will decrease across northwest
Montana as a very weak ridge briefly builds tonight and remains
steady through the day tomorrow. Generally the area will remain
under unstable northwesterly flow for the next few days. The
overall flow is fairly dry, so all that is expected is isolated
mountain showers Monday and Tuesday with partly cloudy skies
across the rest of the region. Glacier National Park is most
likely to receive rain the next few days. Temperatures will remain
around average with breezy conditions in the afternoon.

A quick-moving trough will slide through the Pacific NW and into
the Northern Rockies Wednesday. Latest models suggest that
moisture will be relatively limited with this system, so the best
chance of showers looks to be limited to the higher elevations
north of I-90 Wednesday afternoon. The main impact for the area will
be breezy winds and cooler temperatures under cloudy skies. A few
higher peaks in Glacier NP could see a light dusting of snow given
the colder airmass.

A warming and drying trend will return for the latter half of next
week as a broad ridge builds over the Western US and a drier
airmass moves in. Temperatures should warm each day, reaching near
normal values by next weekend.


.AVIATION...A broad trough is slowly exiting the region today.
Showers and isolated thunderstorms will continue into the evening,
but rising heights will suppress convection tonight and cause
cloud cover to spread out into a ceiling over night. Expect
partial mountain obscurations to continue overnight.



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