577
FNUS75 KBOI 281738
FWSBOI

Spot Forecast for Tartar Fire...Payette National Forest Fire Dispatch
National Weather Service Boise ID
1138 AM MDT Tue Jul 28 2026

Forecast is based on forecast start time of 0700 MDT on July 29.
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, DRY, AND BREEZY AFTERNOON WINDS TODAY THROUGH FRIDAY...
...DRY FRONTAL PASSAGE LIKELY SATURDAY/SUNDAY FOR INCREASED WINDS...

.DISCUSSION...
High pressure will continue hot, dry, and breezy conditions over
the into the weekend. Generally diurnally driven winds with
northeasterly winds in the morning switching to west-northwesterly
in the afternoon. Poor RH recoveries expected each night. Dry frontal
passage for Saturday looks bring increased west-northwest winds into
Sunday. About a 40% chance of critical winds and RH`s for an RFW.

.WEDNESDAY...

Sky/weather.........Sunny.
Max temperature.....88 to 93.
Min humidity........10 to 15 percent.
CWR.................0 percent.
Wind - 20 foot......Northwest 8 to 13 mph. Gusts up to 18 mph in
                    the morning.
Mixing height.......9000 ft AGL.
Transport winds.....West around 15 mph.
Ventilation Index...1350 excellent.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....61 to 66.
Max humidity........35 to 40 percent.
CWR.................0 percent.
Wind - 20 foot......Northeast 6 to 11 mph. Gusts up to 16 mph
                    overnight.
Mixing height.......200 ft AGL.
Transport winds.....North around 15 mph.
Ventilation Index...30 poor.

.THURSDAY...

Sky/weather.........Sunny.
Max temperature.....89 to 94.
Min humidity........11 to 16 percent.
CWR.................0 percent.
Wind - 20 foot......Northwest 5 to 8 mph in the morning shifting to the
                    west around 8 mph in the afternoon.
Mixing height.......9000 ft AGL.
Transport winds.....Southwest around 10 mph.
Ventilation Index...900 excellent.

$$
Forecaster...Smith
Requested by...Incident Commander Hayes
Type of request...WILDFIRE
.TAG 2618307.3/BOI
.DELDT 07/29/26
.FormatterVersion 2.0.0
.EMAIL idpac@firenet.gov