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Area forecast discussion 
National Weather Service Missoula Montana
851 PM MDT Sat Aug 29 2015

Update...red flag has been canceled across the northern rockies.



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Discussion...temperatures have decreased causing the humidity to
increase across the region. The increased humidity has allowed
wind to have a minimal impact on area fires. The gusty westerly
winds will continue until at least midnight this evening for most
locations.



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Aviation...smoke will remain a visibility issue at all terminals
until the cold frontal passage occurs, which will be late
afternoon/early evening for area terminals. Unstable conditions
will exist prior to, and just after, the front crosses western
Montana, with very strong winds likely. Gusts in excess of 40-50
kts are possible through at least midnight, or until the front
passes. Smoke should improve due to the strong winds, and should
remain lifted during the day Sunday. Winds will once again be
breezy Sunday afternoon and evening for all terminals.



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Previous discussion... /issued 252 PM MDT Sat Aug 29 2015/

Discussion...the incoming cold front has brought an initial push
of very strong winds that produced gusts in excess of 60 mph to
occur across parts of eastern Washington and central Idaho so far
today. Although winds in western Montana have been weak so far,
as this front continues its eastward trek, the winds will increase
and become gusty through at least sunset. Ahead of the front,
isolated thunderstorms are likely, especially across The
Butte/Blackfoot region of southwest Montana, where lightning and
gusty winds have already begun forming. Precipitation with the
front, and with any storms, will not be substantial...but any
amount is welcomed at this point, especially to aid in wildfire
suppression efforts ongoing across the region.

Air quality will improve greatly for the northern rockies come
Sunday once the front has passed. Another weaker frontal feature
will produce more measurable rainfall on Sunday, with the greatest
amounts falling across north central Idaho and northwest Montana.
Daytime highs will stay at least 10 to 20 degrees below normal,
struggling to get out of the 50 to 60 degree range for most
places. Winds will also be breezy on Sunday especially in the
afternoon as the front moves through. The cooler temperatures,
breezy winds and precipitation on Sunday should help improve air
quality across much of western Montana and central Idaho.

For the first half of next week, we will mainly see dry and breezy
westerly flow with cooler than normal temperatures. Models are
still showing another cold trough for the later half of next
week. Although details on precipitation amounts remain unclear,
cooler temperatures will continue through next week.

Aviation...smoke will remain a visibility issue at all terminals
until the cold frontal passage occurs, which will be late
afternoon/early evening for area terminals. Unstable conditions
will exist prior to, and just after, the front crosses western
Montana, with very strong winds likely. Gusts in excess of 40-50
kts are possible through at least midnight, or until the front
passes. Smoke should improve due to the strong winds, and should
remain lifted during the day Sunday. Winds will once again be
breezy Sunday afternoon and evening for all terminals.

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Mso watches/warnings/advisories...
Montana...none.
Idaho...none.
&&

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