Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 081020

Area Forecast Discussion
National Weather Service Missoula MT
320 AM MST MON FEB 8 2016

.DISCUSSION...High pressure will continue to build over the region
today, promoting stable conditions and steadily degrading air
quality across central Idaho and western Montana. Stratus could
linger in parts of northwest Montana through the day as well,
while most other locations should see another day full of

The current high pressure pattern is still forecast to be over
north central Idaho and western Montana for much of this week.
Expect stagnant air in stable valley locations, cool morning
temperatures, and patchy fog. The ridge will flatten a bit on
Thursday, which will allow for some cloud cover to pass and
possibly a shower or two in the mountains. This cloud cover will
keep temperatures from dropping as much overnight, so low
temperatures have been raised.

Latest model solutions, along with tools that show the trend of
specific model guidance, agree that the trough for this weekend is
weakening in strength and will likely arrive later than the
previous forecast. This means that chances for precipitation have
been decreased and confidence is low about the strength of the
trough. High pressure may return after this trough so an extended
drier than normal period is looking more likely.


.AVIATION...Patchy fog and/or stratus could plague KGPI this
morning and through the day under building high pressure. KMSO,
KBTM, and KSMN should be free of these types of aviation impacts
though, with only a minor chance of seeing patchy fog develop.
These chances may increase going forward as high pressure
continues to strengthen. Otherwise, very little activity is
expected due to persistent high pressure.



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