503
FXUS65 KBOI 032037
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
237 PM MDT Thu Apr 3 2025

SHORT TERM...Today through Saturday night... Drying out today as the
trough that has been bringing us our weather as of late exits the
region. The greatest chance of precipitation comes this afternoon
with a 20-30% chance over the Boise Mountains. This region also
maintains a low chance of thunder (<10%) as instability builds
overhead. Snow levels around 4000-4500 feet support snow/graupel
being the dominant precipitation type, little accumulation is
expected. Skies begin to clear tonight with overnight lows
reaching 25-30 degrees in lower elevations. High pressure
begins to set in over the region Friday as an upper level ridge
moves in overhead. This supports a warming trend through the
weekend with temperatures making it into the upper 50s to lower
60s Friday and Saturday. Breezy winds this afternoon into
tonight in the Snake River Valley and near the Nevada border,
generally decreasing through Saturday night.

.LONG TERM...Sunday through Thursday...Warming continues into Sunday
as the upper ridge axis shifts to the east. A sharp shortwave trough
will swing into the area Sunday night increasing the chance for
precipitation across SE Oregon, then spreading into SW Idaho early
Monday. This system is connected to a narrow but deep moisture plume
that will lift precipitable water values into the 90th percentile
across the region Sun night/Mon. Snow levels will start off around
8kft MSL and remain above 6000-7500 feet through Monday, which keeps
most sites as rain. Liquid totals of 0.25-0.50 inches are expected
across the mtns of SE Oregon and SW Idaho from Sunday night through
Monday night. Snowmelt from the mild temperatures over the weekend
coupled with the expected precipitation will increase stream/river
flow early next week. Showers linger across the e-central Oregon and
w-central Idaho mtns through Tuesday as snow levels bottom out
between 5-6kft MSL. Dry weather returns for Wed/Thur as an upper
ridge rebuilds along the Continental Divide. Temperatures are 5-10
degrees above normal through the period.

&&

.AVIATION...Mainly VFR. Scattered mtn showers and isolated
thunderstorms producing MVFR and mtn obscuration through early
evening. Scattered showers and isolated thunderstorms will develop
this afternoon mostly over higher terrain. Showers/storms could
produce outflow winds to 25 kt. Snow levels 3500-4500 ft MSL.
Surface winds: W-NW 5-15 kt with gusts to 25 kt through 02Z. Winds
aloft at 10kft: N-NE 10-20 kt.

KBOI...VFR with NW winds through the night. Scattered showers this
afternoon along Boise foothills will obscure mountains at times.

Weekend Outlook...Scattered cumulus buildups Friday afternoon could
obscure mtn tops, otherwise VFR through Sun under mostly clear
skies. Surface winds: Generally less than 12 kt.

&&

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

&&

$$

www.weather.gov/Boise

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

SHORT TERM...NRF
LONG TERM....DG
AVIATION.....DG