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fxus65 kmso 202034 

Area forecast discussion
National Weather Service Missoula Montana
234 PM MDT Tue Aug 20 2019

Discussion...looking at another nice and warm day today and for
Wednesday as well. Temperatures will be around 10 degrees above
normal for this time of the year. Though, there will be an
afternoon breeze each day, that will help with the hot
temperatures. However, for Wednesday, an approaching cold front is
expected to bring quite windy conditions, especially in the later
evening and overnight hours. West-southwest winds will be
steadily increasing during the day Wednesday, then peaking around
sunset and overnight where gusts up to around 35 mph will be
possible, particularly in western Montana. Widespread rain showers
and scattered thunderstorms will also accompany the cold front as
it pushes through in the overnight hours. Those that plan to
spend time on Flathead Lake and other area lakes during this time,
may want to stay apprised to weather conditions.

Scattered showers and isolated thunderstorms will remain in the
forecast Thursday as a trough of low pressure settles in behind
the cold front. This will allow temperatures to drop 15 to 20
degrees below what we'll see Wednesday. Areas around Glacier
National Park will feel especially chilly, as more continuous
rainfall is expected.

A more zonal flow (west to east weather pattern), will develop
over the northern rockies Friday. This will allow temperatures to
rebound, but still likely being around normal, if not slightly
below normal. A particularly strong jet stream will transverse
the region Sunday through early next week, that will bring gusty
winds to the region again. This will be our next potentially wide
reaching impact event for the region. The weather pattern in the
long term, is looking very "fall" like.


Aviation...the northern rockies will be under fair weather
conditions for the rest of the afternoon, and the first half of
Wednesday. Westerly winds will be on the increase in the late
afternoon and evening Wednesday, with gusts up to 25-30kts. A cold
front will move through the region Wednesday night after sunset,
that will bring scattered thunderstorms and gusty erratic winds.


Mso watches/warnings/advisories...

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