921
FNUS75 KBYZ 021204
FWSBYZ

Spot Forecast for Breaks Coulee...Custer County
National Weather Service Billings MT
604 AM MDT Tue Sep 2 2025

Forecast is based on forecast start time of 0700 MDT on September 02.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...
Today will be warm and dry at the fire site. Expect winds to
become northerly this afternoon, then turn a bit gusty by evening
(gusts to 20 mph) as a weak cold front drops through the area.
Surface visibility may become reduced tonight as the wind shift
brings in Canadian wildfire smoke. Looking ahead, a stronger cold
front is expected to bring brisk northwest winds gusting 30-40 mph
on Thursday.

.TODAY...

Sky/weather.........Sunny early, then increasing clouds. An afternoon
                    sprinkle possible.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....87-91.
Min humidity........17-21 percent.
Wind (20 ft)........
 Slope/valley.......Variable 3-6 mph through the morning, becoming
                    northwest to north 5-10 mph in the afternoon.
 Ridgetop...........Variable 3-7 mph through the morning, becoming
                    northwest to north 5-10 mph with gusts to 15 mph
                    in the afternoon.
Mixing height.......Increasing to 10000 ft AGL in the afternoon.
Transport winds.....Light and variable early, then northwest 8 mph.

.TONIGHT...

Sky/weather.........Mostly cloudy in the evening, then partly cloudy.
                    Areas of smoke in the late evening and overnight.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....54-58.
Max humidity........75-79 percent.
Wind (20 ft)........
 Slope/valley.......Northeast 6-12 mph. Evening gusts to 18 mph.
 Ridgetop...........Northeast 10-15 mph. Evening gusts to 20 mph.
Mixing height.......Decreasing to 500 ft AGL overnight.
Transport winds.....Northeast 13 mph.

.WEDNESDAY...

Sky/weather.........Mostly sunny. Areas of smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....71-75.
Min humidity........31-35 percent.
Wind (20 ft)........
 Slope/valley.......North to northeast 5-10 mph.
 Ridgetop...........North to northeast 8-12 mph.
Mixing height.......Increasing to 4500 ft AGL in the afternoon.
Transport winds.....Northeast 9 mph.

$$
Forecaster...Lester
Requested by...Cory Cheguis
Type of request...WILDFIRE
.TAG 2521096.0/BYZ
.DELDT 09/02/25
.FormatterVersion 2.0.0
.EMAIL c.cheguis@custercountymt.gov,mtmcc@firenet.gov,c.cheguis@co.custer.mt.us