Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 262041

Area Forecast Discussion
National Weather Service Boise ID
241 PM MDT THU MAY 26 2016

.SHORT TERM...Tonight through Saturday...a new upper level trough
will approach from the northwest tonight and bring northwest flow
aloft to the region tomorrow. This flow will back to zonal as a
cutoff low forms over California on Saturday. This trough will
push a cold front through the area late tonight through the first
half of Friday...bringing gusty NW winds and cooler temps. Highs
tomorrow will be around 5 degrees cooler than today. With the
zonal flow Saturday, temps will warm back up a few degrees, ending
up a few degrees below normal. Showers and thunderstorms will be
most numerous over the higher terrain of the Idaho side this
afternoon and evening. Tomorrow afternoon and evening, as drier
air moves in, the best chance for showers and thunderstorms will
be in northeast Baker County, the higher terrain of the West-
Central and Boise mountains, and in southern Twin Falls County.
With even more dry air moving in Saturday, there will be no
showers in the forecast. Winds behind the front tomorrow will gust
to around 25 mph in the Western Magic Valley and in the Upper
Treasure Valley from near Mountain Home eastward.

.LONG TERM...Saturday night through Thursday...Zonal flow
Saturday night into Sunday will keep things dry. Influence of an
upper level trough will be felt Sunday evening into early Monday,
with chances of precipitation, mostly in higher terrain in Baker
County and the West Central Mountains. Ridging off the coast
starts to build Monday morning pushing this trough east.
Temperatures start to rise with the building of this ridge to 10+
degrees above normal by Wednesday. Thursday looks to be the
hottest day with temperatures right around 90F for the Boise area.
Next upper low starts to make its way inland by Thursday
afternoon which will increase chances of precipitation, especially
for Baker County.


.AVIATION...VFR with isolated showers and thunderstorms, mostly
in higher terrain. Mid to upper level ceilings in and around
shower activity. Surface winds west to northwest 10-15kts with
gusts 15-25kts with showers. Winds aloft up to 10K feet MSL,
westerly 15-25kts.





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