548
FNUS75 KBOI 241832
FWSBOI

Spot Forecast for Duncan Fire...DOI
National Weather Service Boise ID
1232 PM MDT Fri Jul 24 2026

Forecast is based on forecast start time of 1200 MDT on July 24.
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.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT SATURDAY...

.DISCUSSION...
Hot dry and windy conditions continue over the next several days
under southwest flow aloft as a ridge remains over the Four Corners.
Drier air will move over the fire on Saturday with single digit
relative humidities possible. Isolated thunderstorms this afternoon
will generally stay south and east of the fire, but could produce
brief gusty outflow winds up to 35 mph this afternoon and evening.

.REST OF TODAY...

Sky/weather.........Mostly sunny. Isolated thunderstorms south and
                    east of the fire.
Max temperature.....97 to 102.
Min humidity........18 to 23 percent.
CWR.................10 percent.
Wind - 20 foot......North-northeast around 8 mph with gusts to around 14 mph.
Mixing height.......9500 ft AGL.
Transport winds.....Southwest around 10 mph.
Ventilation Index...950 excellent.

.TONIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....67 to 72.
Max humidity........25 to 30 percent.
CWR.................0 percent.
Wind - 20 foot......Southwest 10 to 16 mph. Gusts up to 14 mph in the
                    evening increasing to 24 mph overnight. Becoming
                    light around sunrise.
Mixing height.......200 ft AGL.
Transport winds.....West around 15 mph.
Ventilation Index...30 poor.

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....95 to 100.
Min humidity........7 to 15 percent.
CWR.................0 percent.
Wind - 20 foot......Southwest 12 to 18 mph with gusts to around 26 mph.
Mixing height.......13000 ft AGL.
Transport winds.....Southwest around 20 mph.
Ventilation Index...2600 excellent.

$$
Forecaster...Anderson
Requested by...Bradley Shoemaker FBAN
Type of request...WILDFIRE
.TAG 2618144.0/BOI
.DELDT 07/24/26
.FormatterVersion 2.0.0
.EMAIL bradley_shoemaker@ios.doi.gov