009
FXUS65 KBOI 092031
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
231 PM MDT Thu May 9 2024

.SHORT TERM...Tonight through Saturday night...Weak
northeasterly winds will persist over southwest Idaho into the
evening. Radar imagery at 1 PM MDT reveals showers over south-
central Idaho moving east-southeast towards the Western Magic
Valley. There`s sufficient instability to trigger a few
thunderstorms this afternoon in the Western Magic Valley and
Southern Twin Falls County. Elsewhere, dry conditions are
expected, though cumulus clouds may form over higher terrain.
Showers and thunderstorms are forecasted to taper off by sunset
as an upper-level ridge extends over the region. While much of
the area will be under the ridge through Saturday, easterly
winds will persist along the Idaho/Nevada border due to the
influence of the four corners low pressure system. This setup
will keep the warmest temperatures and the axis of the upper
ridge to the west of the Cascade Mountains. Nonetheless,
temperatures are anticipated to climb 5-7 degrees above normal
on Friday, with highs reaching the low 80s in the valley by
Saturday.

.LONG TERM...Sunday through Thursday...Excellent agreement
among both the deterministic and ensemble model runs that upper
level ridging will dominate the forecast through mid week next
week. There are hints of a weak disturbance working over the top
of the ridge Mon/Tue, however precipitation chances will be
limited (<10%). There is a high likelihood (close to 100%) that
lower valley areas will see temperatures above 80 degrees on
Sunday, with mid 70s expected for much of the week.

&&

.AVIATION...VFR. Isolated thunderstorms possible 23-01Z near
KTWF/KJER. Sfc winds: WNW 5 to 15 kt, except E 10-20 kt with gusts
to 25 kt near KJER/KTWF. Winds at 10k ft MSL: NE 10-25 kt.

KBOI...VFR with a few afternoon clouds near higher terrain. Sfc
winds: NW 5-15 kt becoming SE overnight.

.WEEKEND OUTLOOK...VFR. High pressure dominating the region with dry
conditions and surface winds 5-15kt.

&&

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

&&

$$

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SHORT TERM...JDS
LONG TERM....MC
AVIATION.....MC