Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 212035

Area Forecast Discussion
National Weather Service Boise ID
235 PM MDT Fri Oct 21 2016

.SHORT TERM...Cold front to the northwest will advance as far
east as Missoula, MT - McCall, ID - Burns, OR, tonight before
dissipating Saturday morning.  We trimmed the eastern edge of
pcpn about 20 miles for tonight.  There is a minimal threat of
thunderstorms in the Blue Mountains of Baker County tonight, too
small to include in the forecast.  Pcpn will exit northern Valley
County, ID, Saturday morning.  Brief cooling Saturday will be
followed by warmer weather again Sunday, even a little warmer and
also drier than forecast yesterday.  Highs Sunday will be in the
upper 50s through 60s in the mountains and near 70 in the lower
southern Idaho valleys and southern Malheur County.  Light winds
tonight and Saturday, becoming southeast 5 to 15 mph Saturday night
through Sunday.

.LONG TERM...Sunday night through Friday...An upper low off the
West Coast will begin to push its way inland on Monday. Under a
southwesterly flow, temperatures will top off Monday at about 10
degrees above normal with a chance of showers over the central
Idaho Mountains in the afternoon and evening. A shortwave,
spinning out of the upper low and moving through a continued
southwesterly flow, will enhance chances for precipitation Tuesday
into Wednesday. Models have varied run to run on precipitation
amounts expected, but for now are indicating a few tenths over a 24
hour period, with the larger amounts expected over the higher
elevations. Temperatures will return to normal on Tuesday. A
building upper level ridge Wednesday into Thursday will bring drier
conditions and temperatures rising a few degrees, to about 5 degrees
above normal. A low pressure center coming from the southwest on
Friday will bring another round of precipitation to the region.


.AVIATION...VFR. Increasing mid-high level clouds from the
west this afternoon. Scattered showers northwest of a KBNO-KMYL-
KMSO line beginning around 22/03Z and ending Saturday before noon.
Surface winds: generally southerly 12 kts or less.  Winds aloft to
10k feet MSL: southwest 20-30 kts.

Weekend Outlook...VFR. Areas of mid-upper level ceilings mainly west
and north of KBOI.  Drier conditions for Sunday.






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