203 
FXUS65 KBOI 070914
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
214 AM MST Sun Nov 7 2021

.SHORT TERM...Today through Tuesday night...Weak cold front
has moved east of our CWA, but light rain showers continue in 
Idaho south of the Snake River this morning. These will end by 
noon except in southern Twin Falls County where they may last 
until mid-afternoon. Clearing and colder tonight, with patchy 
fog in the valleys late tonight and Monday morning. The next 
Pacific storm, currently near the dateline, will race eastward 
across the Pacific today through Monday and reach our CWA late 
Monday night, but mainly impact our area Tuesday. This storm will 
be stronger, wetter, and windier than previous storms and will 
bring significant rain and mountain snow, mainly on the Idaho 
side Tuesday. Total precipitation late Monday through Tuesday 
night will be .50 to 1.00 inch in the Idaho mountains north of
the Snake Basin, with .10 to .25 inch in the lower basins and 
valleys. Total snowfall will be 2 to 4 inches below 5000 feet
but up to 10 inches in the Boise Mountains above 5000 feet. 
Southeasterly winds (except northeast near Jerome,ID) will 
increase as the storm approaches and will become gusty in all 
areas Monday night and Tuesday. For now, winds are expected 
to stay below advisory criteria, as will snow amounts in the 
mountains. High temps today and Monday will be generally in 
the 40s to lower 50s. Lows tonight will be cold, in the teens
in the mountains and 20s to lower 30s in the valleys. Lows 
Monday night will be much warmer as clouds and winds increase. 
Highs Tuesday will also be a little warmer than Monday. 

.LONG TERM...Wednesday through Sunday...Moist northwesterly flow 
will continue the threat for showers across the higher terrain 
Wednesday. Upper level ridge will build along the west coast 
beginning Thursday and shift the storm track northward. This 
will keep the region mostly dry through the weekend with warmer 
temperatures. A temperature inversion could bring valley stratus 
and fog Saturday morning. 

&&

.AVIATION...Generally VFR. Isolated MVFR/IFR showers across 
Southwest Idaho this morning ending by 07/18z. Patchy fog/low 
stratus in sheltered mountain valleys through 07/17z. Otherwise, 
clear and dry with a few high level clouds through the evening. 
Surface winds: Light and variable. Winds aloft at 10kft MSL: 
West 10 to 20 kt.

&&

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

&&

$$

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SHORT TERM...LC
LONG TERM....JS
AVIATION.....JS