973
FNUS75 KGJT 171349
FWSGJT

Spot Forecast for Park Cone Piles...USFS
National Weather Service Grand Junction CO
649 AM MST Fri Jan 17 2025

Forecast is based on ignition time of 1100 MST on January 17.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Winds will increase today ahead of an arctic front
that will drop southward this evening ushering in much colder air
and snow showers. 1 to 3 inches of snow accumulation is possible
tonight through Saturday. Due to stronger winds aloft, good mixing
will promote good or better smoke dispersal today and Saturday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent). Chance of snow
                    showers in the afternoon.
CWR.................10 percent.
Max temperature.....22-27.
Min humidity........40-45 percent.
Wind (20 ft)........West winds 8 to 12 mph increasing to 12 to 18 mph
                    in the afternoon.
Smoke dispersal.....Fair increasing to good in the afternoon.
Haines Index........2 or very low.
LAL.................1.
Mixing height.......Increasing to 4100 ft AGL by mid afternoon.
Transport winds.....West 20 mph.

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Snow showers
                    likely.
CWR.................10 percent.
Min temperature.....3 below-1 above.
Max humidity........86-91 percent.
Wind (20 ft)........West winds 8 to 12 mph in the early evening, then
                    becoming downslope/downvalley 3 to 8 mph after
                    sunset.
Smoke dispersal.....Poor (20000-23000 knot-ft).
Haines Index........2 or very low.
LAL.................1.
Mixing height.......Decreasing to 1700 ft AGL or less after sunset.
Transport winds.....West 15 mph.

.SATURDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Snow showers
                    likely.
CWR.................0 percent.
Max temperature.....10-15.
Min humidity........39-44 percent.
Wind (20 ft)........West-northwest winds 10 to 15 mph with gusts to
                    25 mph in the afternoon.
Smoke dispersal.....Very good increasing to excellent in the
                    afternoon.
Haines Index........4 or low.
LAL.................1.
Mixing height.......Increasing to 7800 ft AGL by mid afternoon.
Transport winds.....Northwest 24 mph.

$$
Forecaster...Matt Aleksa
Requested by...Jack Starkebaum
Type of request...PRESCRIBED
.TAG 2500819.0/GJT
.DELDT 01/17/25
.FormatterVersion 2.0.0
.EMAIL jack.starkebaum@usda.gov