409
FNUS75 KBOI 192016
FWSBOI

Spot Forecast for Box...BLM
National Weather Service Boise ID
216 PM MDT Tue Aug 19 2025

Forecast is based on forecast start time of 0600 MDT on August 20.
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.

...HOT AND DRY WITH BREEZY AFTERNOON WINDS THROUGH FRIDAY...

.DISCUSSION...
Some cumulus development will continue to bring partly cloudy
skies this afternoon. Hot and dry conditions will continue through
the work week, with breezy afternoon northwesterly winds and
brief relative humidity values in the low teens tomorrow and
Thursday. Scattered showers and thunderstorms will move into the
region in a significant pattern shift this weekend.

.WEDNESDAY...

Sky/weather.........Partly cloudy with afternoon cumulus development.
Max temperature.....87 to 92.
Min humidity........16 to 21 percent.
CWR.................0 percent.
Wind - 20 foot......West 4 to 10 mph. Gusts up to 18 mph in the
                    afternoon.
Mixing height.......9500 ft AGL.
Transport winds.....West around 15 mph.
Ventilation Index...1425 excellent.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....53 to 59.
Max humidity........45 to 50 percent.
CWR.................0 percent.
Wind - 20 foot......North 6 to 10 mph. Gusts up to 16 mph in the
                    evening.
Mixing height.......200 ft AGL.
Transport winds.....Northeast around 10 mph.
Ventilation Index...20 poor.

.THURSDAY...

Sky/weather.........Partly cloudy with afternoon cumulus development.
Max temperature.....90 to 95.
Min humidity........11 to 18 percent.
CWR.................0 percent.
Wind - 20 foot......North around 6 mph.
Mixing height.......8500 ft AGL.
Transport winds.....West around 10 mph.
Ventilation Index...850 excellent.

$$
Forecaster...Adams
Requested by...Idaho Team 1
Type of request...WILDFIRE
.TAG 2520243.0/BOI
.DELDT 08/20/25
.FormatterVersion 2.0.0
.EMAIL 2025.box.plans@firenet.gov