224
FNUS75 KBOI 281023
FWSBOI

Spot Forecast for Tartar...USFS
National Weather Service Boise ID
423 AM MDT Fri Aug 28 2026

Forecast is based on forecast start time of 0800 MDT on August 28.
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.

...ISOLATED SHOWERS AND THUNDERSTORMS THIS EVENING...

.DISCUSSION...
Cloudy today with temperatures near normal. A chance for showers
and slight chance for thunderstorms this evening into early
Saturday morning with passage of a weak shortwave. These are
unlikely to bring wetting rainfall to the fire. Cooler and dry
conditions expected Saturday. There is about a 10% chance for
thunderstorms Saturday afternoon with most of the activity
expected east of the fire. Winds likely to increase Saturday
evening behind the frontal passage with gusts up to 30 mph from
the northwest. A brief break in the cooler and wetter conditions
on Sunday and Monday with the next low pressure system moving in
by the middle of the week.

.TODAY...

Sky/weather.........Mostly cloudy.
Max temperature.....76 to 86.
Min humidity........23 to 33 percent.
CWR.................10 percent.
Wind - 20 foot......Southwest 5 to 11 mph with gusts to around 20
                    mph.
Mixing height.......6500 ft AGL.
Transport winds.....South around 15 mph.
Ventilation Index...975 excellent.

.TONIGHT...

Sky/weather.........Cloudy. Scattered showers and isolated
                    thunderstorms in the evening, then a slight
                    chance of showers overnight. Chance of
                    precipitation 30 percent.
Min temperature.....53 to 63.
Max humidity........47 to 64 percent.
CWR.................10 percent.
Wind - 20 foot......South 9 to 15 mph in the evening shifting to
                    the northwest 5 to 11 mph overnight. Gusts up
                    to 24 mph. Gusty and erratic winds expected
                    near thunderstorms in the evening.
Mixing height.......200 ft AGL.
Transport winds.....North around 5 mph.
Ventilation Index...10 poor.

.SATURDAY...

Sky/weather.........Mostly sunny.
Max temperature.....73 to 83.
Min humidity........23 to 33 percent.
CWR.................10 percent.
Wind - 20 foot......West 6 to 12 mph with gusts to around 20 mph.
Mixing height.......8500 ft AGL.
Transport winds.....Southwest around 15 mph.
Ventilation Index...1275 excellent.

$$
Forecaster...Smith
Requested by...Caroline Carlson
Type of request...WILDFIRE
.TAG 2620371.4/BOI
.DELDT 08/28/26
.FormatterVersion 2.0.0
.EMAIL carolinecarlson9@gmail.com