764
FNUS75 KBOI 171912
FWSBOI

Spot Forecast for Box...BLM
National Weather Service Boise ID
112 PM MDT Sun Aug 17 2025

Forecast is based on forecast start time of 0600 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (208)334-9060, if you have questions
or concerns with this forecast.

...WARM AND DRY THROUGH THE WEEK...

.DISCUSSION...
Gusty outflows to 45 mph possible in thunderstorms on Sunday
evening through very early Monday morning, then clearing to a
sunny day. In the absence of thunderstorms, winds are expected to
be light or even calm at times and favoring local downslope flows
until around 1200. West to southwesterly winds then developing
with gusts up to 20 mph during Monday afternoon, before easing
around 2100 and favoring light downslope flows again. Winds
shifting more southerly on Tuesday with possible wind gusts to 25
mph during the afternoon. Significantly drier and warmer on
Tuesday, with RH dropping to around 10 to 15%.

.OUTLOOK...
Conditions are mostly expected to remain sunny and dry throughout
the week, with RH remaining around 15%. Temperatures peaking on
Tuesday, then easing slightly but remaining in the low to mid-90s
until Friday when temperatures return to high 90s. A slight chance
of afternoon convection on Friday, however thunderstorm activity
is currently expected to remain well to the southeast of the fire
location.



.MONDAY...

Sky/weather.........Sunny.
Max temperature.....89 to 94.
Min humidity........18 to 23 percent.
CWR.................0 percent.
Wind - 20 foot......Southwest 8 to 12 mph. Gusts up to 20 mph in the
                    afternoon.
Mixing height.......11500 ft AGL.
Transport winds.....Southwest around 20 mph.
Ventilation Index...1150 excellent.

.MONDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....61 to 66.
Max humidity........44 to 49 percent.
CWR.................0 percent.
Wind - 20 foot......Southwest 3 to 9 mph. Gusts up to 20 mph in the
                    early evening.
Mixing height.......300 ft AGL.
Transport winds.....Southeast around 20 mph.
Ventilation Index...30 poor.

.TUESDAY...

Sky/weather.........Sunny.
Max temperature.....93 to 98.
Min humidity........10 to 15 percent.
CWR.................0 percent.
Wind - 20 foot......South to southwest 12 to 16 mph. Gusts up to 25 mph in the
                    afternoon.
Mixing height.......13500 ft AGL.
Transport winds.....Southwest around 25 mph.
Ventilation Index...2025 excellent.

$$
Forecaster...Zhou
Requested by...Idaho Team 1
Type of request...WILDFIRE
.TAG 2520084.0/BOI
.DELDT 08/18/25
.FormatterVersion 2.0.0
.EMAIL 2025.Box.Plans@firenet.gov