827 
FXUS65 KBOI 290929
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
329 AM MDT Fri Oct 29 2021

.SHORT TERM...Today through Sunday night...Another mild day with
increasing clouds ahead of an advancing upper trough. Similar to
Thursday high temperatures will run 5-10 degrees above normal. 
The trough splits apart as it moves into the interior NW today. 
The northern piece of energy will push a cold front into southeast
Oregon late this afternoon bringing a chance of showers to Baker 
county and the west-central Idaho mountains. Gusty winds will 
accompany the front through southeast Oregon, fading as they cross
into southwest Idaho this evening. Snow levels will range 8-9kft
with liquid totals of 0.10-0.20 inches across the e-central 
Oregon and w-central Idaho mountains through this evening. The 
southern energy will cut off along the OR coast, gradually 
drifting eastward through the weekend. After dry conditions 
Saturday, the chance for showers increases Saturday evening into 
Sunday as the low tracks into eastern Oregon. Precipitation
amounts will be light and spotty in nature with higher
probabilities across the mountains where snow levels will remain
above 7500 feet. Precipitation chances will diminish Sunday night
as the low fills. Temperatures are slightly above normal through 
Sunday.

.LONG TERM...Monday through Friday...A progressive pattern is 
expected through the extended. Models are in agreement about a 
Pacific trough moving into the Pacific Northwest on Monday,
bringing a chance of rain and high elevation snow to our area 
late Monday into Tuesday morning. This system will weaken as it 
undercuts an upper ridge centered over British Columbia, resulting
in light precipitation amounts. The trough will move east on 
Tuesday with a shortwave ridge moving across our area through 
Wednesday. Some timing differences exist, but another trough will 
move into the Pacific Northwest late Wednesday into Thursday and 
weaken as it moves inland. Once again, precipitation amounts will 
be light, and snow will be limited to elevations above 7000 feet. 
The trough may linger overhead into Friday with a chance of 
precipitation continuing. Temperatures will cool a few degrees 
with each system, starting around 5 degrees above normal on Monday
and ending near normal by Friday.

&&

.AVIATION...Mainly VFR with mid/high clouds. Rain showers around  
KBKE/KMYL this afternoon and evening along a cold front, causing 
local MVFR and mountain obscurations. Surface winds: SW to SE 5-15
kt, shifting W to NW this afternoon and evening as the cold front
moves through. Winds aloft at 10kft MSL: W to SW 15-30 kt. 

Weekend Outlook...Mainly VFR, with periods of low/mid ceilings in 
isolated/scattered showers through Sunday. Periods of mountain 
obscurations. Surface winds generally light and variable with 
locally breezy east winds in eastern Oregon on Saturday. Winds
aloft at 10kft MSL: mainly S to W 10-20 kt.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.

&&

$$

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SHORT TERM...DG
LONG TERM....ST
AVIATION.....ST