Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 282035
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
235 PM MDT FRI AUG 28 2015

...Gusty winds on Saturday, much cooler Sunday with smoke
improvement...

.DISCUSSION...After yet another stable, smoky day across central
Idaho and western Montana, the region will undergo a change for
the better after a cold front crosses on Saturday. The cold front
will generate gusty winds most of the day, starting in the
afternoon and continuing well into the evening and nighttime
hours. Valleys and area lakes will see sustained winds of 20 to 30
mph with gust up to 40 mph in the afternoon, thus a Lake Wind
Advisory was issued. Moisture will be limited, but the frontal
passage overall will help to ventilate smoke and clear the air for
most locations. Temperatures will also cool to below-normal
values with higher humidity, which will aid in wildfire
suppression efforts.

Sunday will see lighter winds than Saturday, but will stay breezy
as another, weaker front sweeps through the region during the
afternoon and evening. This system should bring some rain showers
to central Idaho and northwest Montana and help suppress wildfire
activity.

For the first half of next week, we will continue to see a cooler
pattern with breezy afternoon winds each day. A few light rain
showers will be possible, but will remain focused mainly across
northwest Montana. Another trough looks possible towards the back
half of next week, with continued cooler conditions likely.

&&

.AVIATION...Smoke will continue to reduce visibility and obscure
terrain throughout the area, especially for the valleys of
central Idaho and around KMSO. Afternoon breezes could help thin
the smoke out, but only marginal visibility improvements can be
expected. An increase in clouds and some light drizzle will be
possible this afternoon and evening for KGPI and KMSO. A strong
cold front is expected on Saturday and will bring gusty winds to
all area terminals, helping to improve smoke for most locations on
Sunday.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...RED FLAG WARNING from 2 PM Saturday to Midnight MDT Saturday
     Night Deerlodge/West Beaverhead...East Beaverhead.

     RED FLAG WARNING from 2 PM Saturday to Midnight MDT Saturday
     Night Bitterroot...East Lolo...Flathead/Glacier Park...
     Salish and Kootenai Reservation.

     LAKE WIND ADVISORY from Noon to 9 PM MDT Saturday
     Flathead/Mission Valleys.

     RED FLAG WARNING from Noon to 8 PM MDT Saturday Kootenai...West
     Lolo.

ID...     RED FLAG WARNING from 11 AM to 7 PM PDT Saturday Clearwater/Nez
     perce...Palouse/Hells Canyon.

&&

$$


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