562
FXUS65 KBOI 021007
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
407 AM MDT Sat Aug 2 2025

.SHORT TERM...Today through Monday night...A shortwave will
slowly track across the area today with scattered showers and
thunderstorms during the afternoon. There are isolated
thunderstorms in Harney County with notable lightning around
Steens Mountain this morning. Showers and storms will mainly be
confined to eastern OR and the west central ID mountains and
southwest Idaho highlands. Generally dry conditions in the Snake
Basin with increasing clouds during the afternoon. Gusty outflow
winds up to 50 mph possible in the late afternoon and evening,
some of which may reach the Treasure Valley. A trough off the
Pacific NW coast will slowly approach the coast on Sunday with
increasing clouds and a 30-40 percent chance of showers in
eastern OR with a slight chance of thunderstorms. A notable
cold front will move through the area Sunday evening, with wind
gusts of 40-50 mph and blowing dust along the front. The trough
moves overhead on Monday with cooler conditions scattered
showers and isolated thunderstorms. Temperatures will be around
2 to 4 degrees below normal Saturday and Sunday, before
lowering to around 5-10 degrees below normal on Monday.

.LONG TERM...Tuesday through Saturday...West-southwest flow
aloft will develop Tuesday into Wednesday, as a ridge rebuilds
to the east and a trough resides along the PacNW coast. As a
result, high temperatures will trend a few degrees warmer for
Tue/Wed, with dry conditions expected. The Pacific trough is
forecast to move inland Wednesday, with the weak cold front
arriving in E Oregon and SW Idaho by late Wed/Thu. Mid-level
moisture will increase with the trough, but the chance for
showers and thunderstorms remains relatively low (10-15%) across
the northern areas through early Friday. Temperatures will dip
to 5-10 degrees below normal on Friday and Saturday as cool and
dry northwest flow develops in the wake of the trough/cold
front.

&&

.AVIATION...Mostly VFR. Isolated showers/thunderstorms near the
NV border diminishing this morning. Then, scattered storms
returning this afternoon, capable of heavy rain, small hail,
30-40 kt outflows, and localized MVFR to LIFR conditions. Mtns
obscured in precip, and in vicinity of wildfires. Surface winds
outside of outflows: variable 5-10 kt becoming NW-N 5-15 kt
after 02/16Z. Winds aloft at 10kft MSL: W to NW 5-15 kt.

KBOI...Generally VFR. Thunderstorms may enter KBOI vicinity
between 02/22 and 03/03Z. Erratic outflow winds from distant
storms are also possible this PM. Stronger storms will be
capable of 25-40 kt gusts. Surface winds outside of storms:
variable 3-7 kt, then NW 10-15 kt with gusts to 15-25 kt this
afternoon.

Sunday Outlook: Scattered afternoon showers/thunderstorms for
east Oregon and central Idaho. Thunderstorms capable of 30-45
kt outflows, and heavy rain/small hail resulting in localized
MVFR to LIFR conditions. Mtns obscured in precip, and in
vicinity of wildfires. Surface winds outside of storms: NW-SW
5-15 kt.

&&

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

&&

$$

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