FXUS65 KBOI 232040
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
240 PM MDT Wed Oct 23 2024

.SHORT TERM...Tonight through Friday night...A shortwave is
moving across central OR and strengthening as it moves across
the state. This shortwave will bring a potent cold front
through the area late this afternoon in eastern OR and this
evening in southwest ID with rapidly falling snow levels. Snow
already falling at 6500ft at Wagontire, west of Burns OR.
Expect moderate precipitation along the cold front with wind
gusts up to 40 mph across extreme SE Oregon this afternoon.
Slightly higher wind gusts expected in the Treasure and Magic
Valleys this evening with gusts up to 50 mph possible along the
cold front. The strongest winds are forecast to be near
Mountain Home. A wind advisory remains in effect for the
southwest Idaho highlands and the Magic and Treasure Valley this
evening for the wind gusts associated with the cold front.
Precipitation will quickly taper off behind the front after
midnight. Snow levels range from 6500-7500 ft ahead of the cold
front to around 4500-5500 ft behind the cold front, but snow
accumulations remain limited to the highest peaks as the
precipitation tapers off quickly when the cooler air arrives.
Generally 0.10 to 0.25 inch of precipitation expected for the
area with this system. Thursday and Friday will be dry with
light winds and a warming trend. Temperatures on Thursday will
be around 10 degrees cooler than today, before rebounding to
near normal by Friday. Friday morning will be the coldest
morning of the period with temperatures in the 10-20s in the
mountains and upper 20s to low 30s in the lowest valleys.

.LONG TERM...Saturday through Wednesday...Dry southwest flow
will bring mild temperatures on Saturday and Sunday ahead of a
trough in the Gulf of Alaska. By Monday this trough will move
into the region, bringing a cold front with cooler and
unsettled conditions through Wednesday. Snow levels fall to
3500-4500 feet with this system. Temperatures will be around 10
degrees above normal on Saturday before lowering to 10 degrees
below normal after cold front moves through.

&&

.AVIATION...Cloudy, lowering ceilings. Areas of MVFR/IFR
conditions in rain and mountain snow this aft/eve. Mountains
obscured. Snow level 7500ft, lowering to 5000ft this
evening. Patchy fog overnight. Surface winds: NW 10-20 kt this
afternoon and evening with gusts 30-45kt, strongest near KBOI
KMUO KTWF KJER this evening, becoming NW 5-10kt by Thu morning.
Winds aloft at 10kft MSL: generally W-SW 25-35 kt, becoming NW
10-20kt by 06z/Thu.

KBOI...VFR today. Cold front 01Z-05Z/Thu will bring IFR-MVFR
conditions in rain with gusts to 30-45kt. Surface winds variable
5-10kt, becoming NW 10-20kt after 00z/Thu.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Wind Advisory from 6 PM to 9 PM MDT this evening IDZ014-015.
     Wind Advisory from 9 PM this evening to midnight MDT tonight
     IDZ016-030.
OR...None.

&&

$$

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SHORT TERM...KA
LONG TERM....KA
AVIATION.....KA