Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 202007

Area Forecast Discussion
National Weather Service Missoula MT
207 PM MDT Thu Oct 20 2016

.DISCUSSION...The wet westerly flow will continue. Precipitation
this evening will continue to be focused over the panhandle and
northwest Montana, then sag over north central Idaho and west
central Montana late tonight as it weakens. Cloud cover will
continue to stream over the region Friday, and rain will increase
in the late afternoon and overnight ahead of the next shortwave
feature. Snow levels will continue to be pretty high, so expect
rain in all but the highest terrain.

A brief, warm ridging period will manifest late Saturday into
Sunday which could lead to the development of overnight fog for
the valleys Sunday morning. A few isolated showers will eject
ahead of the next large trough Monday, though the trend for
precipitation chances has decreased. Above-normal temperatures
appear likely for the weekend into Monday under this southwest

By Tuesday into Thursday...another plume of moisture will
bring additional precipitation to the northern Rockies, with
varying snow levels generally above 6000 feet. However, confidence
still remains low on details for this system.


.AVIATION...Rain and high elevation snow will become widespread
in north central Idaho and northwest Montana today, so lowered
ceilings and obscured terrain can be expected. KGPI and KMSO have
the best chance at seeing shower impacts through tonight.

Gusty winds will continue over the terrain this afternoon,
particularly for southwest Montana/Lemhi County, as well as along
the Continental Divide. KBTM may see occasional gusty winds of
20-25 kts through early evening.



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