Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 281030

Area Forecast Discussion
National Weather Service Missoula MT
330 AM MST WED JAN 28 2015


Fog has redeveloped especially in northwest Montana this morning.
The rest of the region has patchy fog that will linger into mid
morning. Snow has been falling all night over Gilmore Summit in
Lemhi County so roads are snow covered. Snow will decrease through
the morning as the associated low passes to the east. Salmon has
also had light precipitation and fog so roadways are likely

High pressure will rebuild in Idaho and western Montana today and
stable conditions tonight will be favorable to fog redevelopment
by Thursday morning. There will be little change in the weather
pattern on Friday so fog will again form.

The next shortwave is forecast to arrive on Saturday bringing
cooler air and chances for snow especially for those near the
divide. On Sunday and Monday this cooler air will remain near the
divide and a weak warm front will move in from the west with
mountain snow and valley rain/snow through at least Monday.

The flow pattern will turn northwesterly for Tuesday and
Wednesday and there is a chance for cooler air to move in from the
east so snow showers are in the forecast for the extended


Fog has develop in many of the valleys of north central Idaho and
western Montana despite a shortwave passing through the region.
Low pressure passing through southeastern Idaho has also been
producing cloud cover and snow in Lemhi County. This low is
passing to the east so snow and cloud cover will decrease this
morning. High pressure will redevelop tonight so fog and low cloud
cover will again cause issues in the stable valleys of Idaho and
western Montana with impacts through Friday.


MT...ID...WINTER WEATHER ADVISORY until 8 AM MST this morning Eastern
     Lemhi County.


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