487
FNUS75 KBOI 311245
FWSBOI

Spot Forecast for Tartar...Usfs
National Weather Service Boise ID
645 AM MDT Mon Aug 31 2026

Forecast is based on forecast start time of 0700 MDT on August 31.
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.

...SUNNY AND WARMER TODAY AND TUESDAY...
...SLIGHT CHANCE FOR THUNDERSTORMS TUESDAY AFTERNOON...

.DISCUSSION...
Weak upper ridge today will bring above normal temperatures.
Upper level trough reaching the Pacific Northwest coast
strengthening southwesterly flow aloft tonight. Clouds will
increase Tuesday morning, leading to showers and a slight chance
of thunderstorms Tuesday afternoon. Thunderstorms look to initiate
around 2 PM MDT Tuesday and could affect the fire through at
least 5 PM. Thunderstorms could produce gusty winds and brief
heavy rainfall. Another round of showers and thunderstorms
possible Wednesday morning through early Wednesday afternoon.

.TODAY...

Sky/weather.........Sunny.
Max temperature.....82 to 87.
Min humidity........9 to 16 percent.
CWR.................0 percent.
Wind - 20 foot......Southeast 3 to 7 mph.
Mixing height.......4000 ft AGL.
Transport winds.....South around 5 mph.
Ventilation Index...200 fair.

.TONIGHT...

Sky/weather.........Mostly cloudy.
Min temperature.....57 to 62.
Max humidity........43 to 49 percent.
CWR.................0 percent.
Wind - 20 foot......East 4 to 10 mph.
Mixing height.......100 ft AGL.
Transport winds.....East around 10 mph.
Ventilation Index...10 poor.

.TUESDAY...

Sky/weather.........Mostly cloudy. A 10 precent chance for
                    thunderstorms in afternoon.
Max temperature.....78 to 83.
Min humidity........15 to 20 percent.
CWR.................10 percent.
Wind - 20 foot......South 8 to 14 mph with gusts to around 24 mph.
Mixing height.......5000 ft AGL.
Transport winds.....South around 10 mph.
Ventilation Index...500 good.

$$
Forecaster...Smith
Requested by...Caroline Carlson
Type of request...WILDFIRE
.TAG 2620976.0/BOI
.DELDT 08/31/26
.FormatterVersion 2.0.0
.EMAIL carolinecarlson9@gmail.com