Spot Forecast
Issued by NWS Billings, MT

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FNUS75 KBYZ 261029
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Spot Forecast for Big Willow Pile Rx...USFS
National Weather Service Billings MT
429 AM MDT Tue Mar 26 2024

Forecast is based on ignition time of 0900 MDT on March 26.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...
Unstable northwest flow will result in scattered off-and-on snow
showers at the burn site today, with the greatest potential in the
afternoon and evening. Up to 1-2 inches of snow is possible.
Winds in the Big Willow Creek valley will be terrain driven,
becoming north by late this morning. On the upper slopes and
ridges, expect well-mixed northwest winds today then southwest to
west winds Wednesday. It is possible a mixed southwest wind
surfaces in the valley bottom Wednesday afternoon.

.TODAY...

Sky/weather.........Mostly cloudy. Scattered snow showers.
CWR.................15 percent.
Max temperature.....25-29.
Min humidity........53-57 percent.
Wind (20 ft)........
 Slope/valley.......Downvalley 4-8 mph early, becoming north 6-12 mph
                    by 11am. Afternoon gusts to 20 mph.
 Ridgetop...........Northwest 15-25 mph.
Mixing height.......Increasing to 4500 ft AGL in the afternoon.
Transport winds.....Northwest around 18 mph.
Smoke dispersal.....Poor (34100 knot-ft) early in the morning
                    increasing to good (81000 knot-ft) in the
                    afternoon.

.TONIGHT...

Sky/weather.........Mostly cloudy. Scattered evening snow showers,
                    becoming isolated overnight.
CWR.................15 percent.
Min temperature.....10-14.
Max humidity........84-88 percent.
Wind (20 ft)........
 Slope/valley.......North 5-15 mph in the evening, becoming
                    downvalley 4-8 mph overnight.
 Ridgetop...........Northwest 10-20 mph.
Mixing height.......Decreasing to 500 ft AGL overnight.
Transport winds.....Northwest around 15 mph.
Smoke dispersal.....Decreasing to poor (7500 knot-ft).

.WEDNESDAY...

Sky/weather.........Partly sunny. A few flurries possible.
CWR.................0 percent.
Max temperature.....31-35.
Min humidity........40-44 percent.
Wind (20 ft)........
 Slope/valley.......Downvalley 4-8 mph early, becoming north 6-12 mph
                    by noon. Afternoon gusts to 15 mph. Winds could
                    become southwest 10-20 mph during peak heating.
 Ridgetop...........Southwest to west 15-20 mph. Gusts to 25 mph.
Mixing height.......Increasing to 5000 ft AGL.
Transport winds.....West around 17 mph.
Smoke dispersal.....Increasing to good (85000 knot-ft) in the
                    afternoon.

$$
Forecaster...Lester
Requested by...Evan Albea
Type of request...PRESCRIBED
.TAG 2408430.0/BYZ
.DELDT 03/26/24
.FormatterVersion 2.0.0
.EMAIL evan.albea@usda.gov


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