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Area forecast discussion 
National Weather Service Boise Idaho
338 am MDT Friday Sep 19 2014

Short through Saturday...slightly cooler and
noticeably clearer skies today as westerly flow keeps smoke from
the King fire over California/Nevada and takes 4-7f degrees off of yesterday/S
high temperatures. While the arimass remains moist...the
increased stability will keep showers from developing this
afternoon. The upper ridge amplifies over the Pacific northwest on Saturday
driving temperatures back up the 4-7f degrees we lose today. The
airmass dries out while low level winds remain out of the west-northwest
and upper level winds out of the N-NE. Though large fires remain
in Oregon the smoke activity has been less of those in northern
California...thus will see less smoke in the area over the next 36 hours.

Long term...Saturday night through upper level low
pressure system in California will move to the northeast and reach
southern Idaho on Sunday...then push east of the region Monday
night. The system will bring a chance of showers and thunderstorms
to southwest Idaho and portions of southeast Oregon /not including
Baker or Burns/ Sunday and Monday. Temperatures will be above normal
west of the low track /which includes most of southeast
Oregon/...and near normal close to the low track /which includes
most of SW Idaho/ owing to the clouds and showers. A drier southwest
flow follows the departing system for Tuesday and Wednesday as a
large upper trough approaches the West Coast. The trough is prognosticated
to approach the area by Thursday...accompanied by cooler
temperatures and a chance of showers.


Aviation...VFR with mostly clear skies today. Areas of MVFR smoke
through 18z this morning in the western Magic Valley /including
ktwf/ and along the Nevada border. Light mainly northwest surface
winds to 10 knots. Westerly winds aloft around 15 knots up through
10k feet mean sea level.

Weekend outlook...VFR. Mostly clear through Saturday night...then
increasing clouds on Sunday with a chance of showers and
thunderstorms along the Nevada border. Light and variable
surface winds.


Boi watches/warnings/advisories...




Short term...dg

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