Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 282055

Area Forecast Discussion
National Weather Service Missoula MT
255 PM MDT TUE JUL 28 2015

...A return to hot weather Friday through the Weekend...

.DISCUSSION...Expect a pretty chill night tonight with drier air
moving into the region. The higher elevated valleys, such as Butte
and Dixie, as well as some of the very low elevation valleys in
western Montana could get cold enough to receive a few hours of
patchy frost. Confidence is moderate for this solution.

The very cool weather we have experienced the past
few days will begin to rebound Wednesday under a dry westerly

Thursday...CONFIDENCE IS HIGH for a big change to HOTTER WEATHER
with a ridge of high pressure developing over much of the western
U.S. Expect temperatures to hover in the lower 90s Thursday across
western Montana valleys and to near 100 in the Lower Hells canyon
of west central Idaho.

Friday through Sunday even hotter conditions are likely as the
ridge of high pressure strengthens further over the region.
Confidence is high for high temps in the mid to possibly upper
90s in the valleys of western Montana. The valleys of central
Idaho, especially the Lower Hells Canyon will likely see
temperatures hovering around 105 or more.

Early next week models hang on to above normal temperatures but
not as extreme as the ridge is expected to be a bit weaker. The
big difference starting late Sunday into Tuesday will be the
presence of some monsoonal moisture at the mid levels. This would
bring a potential for thunderstorms, mainly in southwest Montana
and central Idaho. Confidence for thunderstorms, or amount of
storms is pretty low at this time.


.AVIATION....Winds are currently gusting near 20 knots at KGPI and
KBTM, but the winds are expected to dissipate as the sun sets this
evening. For tonight mainly clear skies is expected which could
help produce some patchy fog in some low-lying valleys.
Otherwise...a calm flying forecast is in store for the next 24



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