739
FXUS65 KBOI 262110
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
210 PM MST Tue Nov 26 2024

.SHORT TERM...Tonight through Thursday night...Northwest flow is
beginning over the area, as showers move to the southeast this
afternoon. Rain and snow showers continue into this evening
before tapering off tonight. Lower valleys in the Columbia Basin
are slow to clear out of the low clouds and fog today and that
is concerning to our area for Wednesday and Thursday. Areas of
fog and low stratus developing tonight lasting into Wednesday.
With the abundant moisture in the lower atmosphere, low clouds
and fog may be more pronounced in the Snake Basin on Thursday
and Friday with northwest flow than the current forecast
indicates. Cooler conditions expected at night on Thursday and
Friday with good radiational cooling. It is uncertain how much
stratus will form in the Snake/Weiser Basin on Wednesday and
Thursday, but if it does form, that will keep temperatures
cooler in those locations.

.LONG TERM...Friday through Tuesday...Northwest flow aloft
continues into Saturday before an upper level ridge builds over
the area for the remainder of the long term. A temperature
inversion is likely with cooler temperatures in the valley,
areas of fog and stagnant conditions. Temperatures will be near
or a few degrees below normal.

&&

.AVIATION...MVFR to IFR conditions today. Scattered rain and
snow showers with snow levels around 3500-4500 ft MSL. Showers
tapering off after sunset. Mountains obscured. Areas of LIFR fog
and ceilings tonight. Surface winds: NW 5-10kt. Winds aloft at
10kft MSL: W-SW 10-20kt becoming NW 10-20kt by 00z/Wed.

KBOI...MVFR to IFR ceilings at times today. LIFR fog/ceilings
possible tonight.

&&

.AIR STAGNATION...A ridge will build over the region next
weekend with stagnant conditions, low mixing heights and light
winds. These conditions last well into next week.

&&

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

&&

$$

www.weather.gov/Boise

Interact with us via social media:
www.facebook.com/NWSBoise
www.twitter.com/NWSBoise

SHORT TERM...KA
LONG TERM....KA
AVIATION.....KA
AIR STAGNATION...KA