Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 221001

Area Forecast Discussion
National Weather Service Boise ID
401 AM MDT Sun Oct 22 2017

.SHORT TERM...Today through Monday...Precipitation will continue
across east-central Oregon and west-central Idaho today under a
moist westerly flow. Orographic enhancement will focus heaviest
rain and snow across higher terrain with lighter rain across the
valleys. Snow levels will range from 7500 feet across the north
to 9000 feet along the NV border. Much of southeast Oregon and
areas of southwest Idaho from the Snake Plain southward will be
cloudy but dry today. Breezy conditions will continue through the
day with with winds of 10 to 25mph across open terrain. Drier
conditions develop tonight and Monday as an upper ridge builds
along the coast, cutting off the moisture tap. Temperatures are
about 10 degrees warmer today. Mountains will see further warming
on Monday with little change in the valleys.

.LONG TERM...Monday night through Saturday...An upper level ridge
will bring mostly sunny skies and seasonable temperatures through
Thursday. A cold front will move across the area on Thursday
morning, bringing showers generally to the central Idaho mountains.
Most of the energy and the cooler temperatures will stay east of our
region in MT and the upper Midwest. An blocking ridge develops in
the Gulf of Alaska for the remainder of the period bringing mostly
clear skies and temperatures near normal Friday into early next


.AVIATION...Rain/snow will keep widespread MVFR and local IFR
obscuring mountains across east-central Oregon and west-central
Idaho through 23/06Z. Snow levels are 7500 to 9k feet. VFR in the
valleys with local MVFR from KBKE to KBOI through 23/00Z. Surface
winds are 10 to 25kts with strongest winds across open terrain
through 23/03Z. West-northwest winds 30-45 kts at 10k feet MSL
through Monday morning.





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