FNUS75 KBOI 201804
FWSBOI

Spot Forecast for Mores South...Boise NF
National Weather Service Boise ID
1204 PM MDT Wed May 20 2026

Forecast is based on ignition time of 0600 MDT on May 21. 
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.

...DRY COLD FRONT BRINGING A LIGHT BREEZE ON THURSDAY...
...WARM AND DRY THROUGH THE WEEKEND...

.DISCUSSION...
A weak, dry cold front will move through tonight into Thursday.
This will produce a light breeze Thursday morning from the north
to northeast with ridgeline gusts to around 15 mph. Winds will
become northwest in the afternoon and should mostly follow the 
Granite Creek drainage. It will be mostly clear each day with high
clouds Thursday night. Expect warm and dry conditions Thursday 
and Friday with further warming over the weekend. 

.THURSDAY...

Sky/weather.........Sunny. 
Max temperature.....69 to 73. 
Min humidity........17 to 22 percent. 
CWR.................0 percent. 
Wind - 20 foot......North to northeast 3 to 6 mph in the morning, 
                    becoming northwest 4 to 7 mph in the afternoon. 
                    Gusts to 15 mph, strongest on ridgelines. 
Mixing height.......9500 ft AGL. 
Transport winds.....North around 10 mph. 
Ventilation Index...950 excellent. 

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy. 
Min temperature.....35 to 40. 
Max humidity........60 to 75 percent. 
CWR.................0 percent. 
Wind - 20 foot......Northwest 3 to 7 mph with gusts to around 15 
                    mph early in the evening, becoming downslope 
                    less than 3 mph after 2100 hrs. 
Mixing height.......100 ft AGL. 
Transport winds.....East around 5 mph. 
Ventilation Index...5 poor. 

.FRIDAY...

Sky/weather.........Mostly sunny. 
Max temperature.....71 to 75. 
Min humidity........17 to 22 percent. 
CWR.................0 percent. 
Wind - 20 foot......Upslope 2 to 5 mph. Ridgeline winds southwest 
                    3 to 6 mph with gusts to 12 mph. 
Transport winds.....West around 5 mph. 
Ventilation Index...425 fair. 

$$
Forecaster...Tangen
Requested by...Jacob Miller
Type of request...PRESCRIBED
.TAG 2614145.0/BOI
.DELDT 05/21/26
.FormatterVersion 2.0.0
.EMAIL Jacob.miller3@usda.gov,Colby.bertalotto@usda.gov