562
FXUS65 KBOI 120238
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
838 PM MDT Wed Jun 11 2025

.DISCUSSION...Isolated showers and thunderstorms continue to
move northeast at around 20 mph this evening. The strongest
storm as of 8:30 PM MDT was located over south-central Malheur
County, with other notable storms over Owyhee and Baker
counties. These storms are expected to decrease in coverage and
intensity through midnight. The current forecast accounts for
all this well, and no update is planned at this time.

&&

.AVIATION...Isolated showers and thunderstorms possible through
05Z, with best chances near terrain in eastern Oregon.
Thunderstorms have the potential for hail, brief downpours,
frequent lightning, and outflows of 35 kt. VFR outside of
precipitation, deteriorating to MVFR or IFR in storms. Mtns
obscured at times in heavy showers/thunderstorms. Surface winds:
W-NW 5-15 kt outside of thunder. Winds aloft at 10kft MSL: SW-W
15-25 kt.

KBOI...VFR with light winds overnight. Less than 10% chance of
an isolated shower/thunderstorm before 06Z. Surface winds: NW
around 8 kt, becoming light and variable overnight.

&&

.PREV DISCUSSION...
SHORT TERM...Tonight through Friday night...The main Pacific
short wave trough with showers and thunderstorms has already
passed through most of our CWA as of 1 PM MDT, but has yet to
pass through the Flash Flood Watch area of eastern Valley and
Boise Counties. Even so, hi-res models have much less pcpn in
those areas this afternoon than they did earlier. However, we
will continue the watch until its scheduled end-time of 5 PM
MDT. Skies elsewhere have become sunny and should stay that way
the rest of today. After today`s wave exits east, much quieter
weather is expected tonight through Friday night although we
still have a 20-30 percent chance of showers and thunderstorms
in the Idaho mountains Thursday afternoon, and a 20 percent
chance Friday afternoon in eastern Valley and Boise Counties.
Temperatures through Friday night will be cooler than past
days but still 4 to 8 degrees normal, with highs 85 to 90 in
the lower valleys and 75 to 85 at higher elevations. Low temps
will also be cooler, generally 50 to 60 at low elevations and
45 to 50 at higher elevations. Daytime winds will be mainly
west or northwest 5 to 15 mph, with afternoon gusts 20 to 25
mph in eastern Oregon and the Snake Basin. Gusts Friday
afternoon look strong enough for patchy blowing dust in
southern Harney County/OR.

LONG TERM...Saturday through Wednesday...Dry southwest flow
aloft will dominate over the extended period as our area
remains between an upper level trough near the coast and an
upper level ridge to our east. This will bring dry conditions
over the weekend with temperatures around 5-10 degrees above
normal. Ensembles generally nudge the trough inland early next
week, but weaken it significantly as it moves onshore. The
main impact for now will be a 10-20% chance of showers and
thunderstorms Monday through Wednesday over the northern
mountains, with lower chances elsewhere. Temperatures will
become slightly more uncertain as the trough moves inland,
but are still favored to remain 5-10 degrees above normal.
Expect locally breezy winds each afternoon through the period.

&&

.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

DISCUSSION...SP
AVIATION.....MC
SHORT TERM...LC
LONG TERM....ST