Spot Forecast
Issued by NWS Billings, MT

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FNUS75 KBYZ 121035
FWSBYZ

Spot Forecast for Arrowhead Bowl Pile Rx...USFS TRD
National Weather Service Billings MT
435 AM MDT Tue Mar 12 2024

Forecast is based on ignition time of 0900 MDT on March 12.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Generally dry conditions can be expected at the burn site today
with southwest winds prevailing. Snow will spread into the area
tonight as a disturbance moves into the region. Periods of snow
can be expected through Wednesday night. Light westerly winds will
shift out of the north for Wednesday. Currently, 5 to 9 inches of
snowfall is forecast over the burn area through Wednesday night.
Latest probabilities for 6 or more inches of snowfall is around 60
percent.

.TODAY...

Sky/weather.........Mostly cloudy. Slight chance of snow showers in
                    the afternoon.
CWR.................5 percent.
Max temperature.....39-43.
Min humidity........37-41 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 8 to 14 mph with gusts to
                    around 20 mph.
 Ridgetop...........West 10 to 20 mph.
Mixing height.......500 ft AGL early in the morning increasing to
                    5200 ft AGL in the afternoon.
Transport winds.....Southwest around 20 mph.
Smoke dispersal.....Poor (9600 knot-ft) early in the morning
                    increasing to good (71700 knot-ft) in the
                    afternoon.

.TONIGHT...

Sky/weather.........Cloudy. Slight chance of snow in the evening,
                    then snow overnight.
CWR.................50 percent.
Min temperature.....18-22.
Max humidity........88-92 percent.
Wind (20 ft)........
 Slope/valley.......West to northwest winds 4 to 8 mph.
 Ridgetop...........West 5 to 10 mph.
Mixing height.......5200 ft AGL early in the evening decreasing to
                    500 ft AGL overnight.
Transport winds.....West to northwest around 10 mph.
Smoke dispersal.....Poor (22400 knot-ft early in the evening
                    decreasing to 3800 knot-ft late in the night).

.WEDNESDAY...

Sky/weather.........Cloudy. Snow.
CWR.................90 percent.
Max temperature.....28-33.
Min humidity........63-67 percent.
Wind (20 ft)........
 Slope/valley.......North to northeast winds 8 to 16 mph with gusts
                    to 20 mph in the afternoon.
 Ridgetop...........North to northeast 15 to 25 mph.
Mixing height.......500 ft AGL early in the morning increasing to
                    2500 ft AGL in the afternoon.
Transport winds.....North around 20 mph.
Smoke dispersal.....Poor (9500 knot-ft) early in the morning
                    increasing to fair (47000 knot-ft) in the
                    afternoon.

$$
Forecaster...Palmquist
Requested by...Evan Albea
Type of request...PRESCRIBED
.TAG 2406196.0/BYZ
.DELDT 03/12/24
.FormatterVersion 2.0.0
.EMAIL evan.albea@usda.gov


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