257 
FNUS75 KBYZ 012354
FWSBYZ

Spot Forecast for West Fork...USFS
National Weather Service Billings MT
554 PM MDT Mon Sep 1 2025

Forecast is based on forecast start time of 1800 MDT on September 01. 
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...

Conditions will remain warm and dry into Tuesday, with minimum
humidities in the teens to near 20 Tuesday afternoon. Tuesday evening
into overnight, a weak cold front will bring gusts around 20-25 mph, 
with a 15% chance for gusts over 30 mph through 2200 MDT Tuesday.
With the front, a low (10%) chance of a shower or weak thunderstorm
will be possible, although any precipitation is expected to be light.
Wednesday afternoon may also see breezy conditions, with gusts up to
20 mph. Wednesday will be a couple degrees cooler than Tuesday, with 
minimum humidities in the low 20s. Increasing atmospheric moisture
will allow another low chance (10%) of a shower or weak thunderstorm.

Thursday afternoon into evening looks to have another cold front
increase wind gusts to 20 to 30 mph. Similar to Tuesday, there will
be a low chance of a shower or thunderstorm associated with the
frontal passage. There is high confidence in Friday into the weekend
trending wetter than the previous few days, but there is low
confidence in how the pattern resolves and the overall rainfall 
potential.

.TONIGHT...

Sky/weather.........Mostly clear. Haze in the evening. 
CWR.................0 percent. 
Chance of lightning.2 percent. 
Min temperature.....42-46. 
Max humidity........47-51 percent. 
Wind (20 ft)........ 
 Slope/valley.......North winds 5 to 8 mph. 
 Ridgetop...........North around 10 mph. 
Mixing height.......8900 ft AGL early in the evening decreasing to 
                    700 ft AGL overnight. 
Transport winds.....North around 5 mph. 

.TUESDAY...

Sky/weather.........Mostly sunny. 
CWR.................0 percent. 
Chance of lightning.8 percent. 
Max temperature.....73-77. 
Min humidity........16-20 percent. 
Wind (20 ft)........ 
 Slope/valley.......Light winds becoming north 5 to 10 mph with
                    gusts up to 25 mph in the afternoon. 
 Ridgetop...........North around 25 mph. 
Mixing height.......700 ft AGL early in the morning increasing to 
                    11000 ft AGL in the afternoon. 
Transport winds.....North around 10 mph. 

.TUESDAY NIGHT...

Sky/weather.........Mostly clear. 
CWR.................0 percent. 
Chance of lightning.5 percent. 
Min temperature.....40-44. 
Max humidity........50-54 percent. 
Wind (20 ft)........ 
 Slope/valley.......North winds 5 to 10 mph with gusts up to 20
                    mph in the evening, becoming light overnight. 
 Ridgetop...........North around 20 mph. 
Mixing height.......9600 ft AGL early in the evening decreasing to 
                    500 ft AGL overnight. 
Transport winds.....North around 10 mph. 

.WEDNESDAY...

Sky/weather.........Mostly sunny. 
CWR.................0 percent. 
Chance of lightning.5 percent. 
Max temperature.....71-75. 
Min humidity........20-24 percent. 
Wind (20 ft)........ 
 Slope/valley.......Light winds becoming north 5 to 8 mph with 
                    gusts to around 20 mph in the afternoon. 
 Ridgetop...........North around 20 mph. 
Mixing height.......500 ft AGL early in the morning increasing to 
                    9200 ft AGL in the afternoon. 
Transport winds.....North around 20 mph. 

$$
Forecaster...Archer
Requested by...Joe Domitrovich
Type of request...WILDFIRE
.TAG 2520413.12/BYZ
.DELDT 09/01/25
.FormatterVersion 2.0.0
.EMAIL joseph_domitrovich@firenet.gov