140
FNUS75 KSLC 020039
FWSSLC

Spot Forecast for D4 Piles...USFS
National Weather Service Salt Lake City UT
539 PM MST Mon Dec 1 2025

Forecast is based on ignition time of 0700 MST on December 02.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Despite a storm system moving into northern Utah
tomorrow, conditions will stay dry and relatively stable at the
burn during the day Tuesday with light westerly winds. The
associated weak frontal boundary is anticipated to cross the burn
site early Tuesday evening, shifting winds to the northwest and
bringing a small chance of snow, primarily Tuesday night into
Wednesday morning. In a more unstable airmass in association with
the storm system, clearing indices are expected to rise to just
above 500 for Wednesday afternoon. High pressure will then return
Thursday into the first part of the weekend, bringing more stable
conditions that will bring clearing indices well below 500 once
again.

.TUESDAY...

Sky/weather.........Partly cloudy (55-65 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......10 percent.
Max temperature.....30-34.
Min humidity........42-46 percent.
Wind (20 ft)........West winds 5-10 mph.
Mixing height.......1000 ft AGL.
   Climatology......20-30th Percentile.
Transport winds.....West winds 10-15 mph.
Clearing index......130.

.TUESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent cloud cover).
                    Slight chance of snow early in the evening.
                    Chance of snow early in the morning.
CWR.................10 percent.
Chance of pcpn......30 percent.
Min temperature.....8-12.
Max humidity........92-96 percent.
Wind (20 ft)........Northwest winds 5-10 mph.
Mixing height.......0 ft AGL.
Transport winds.....West winds 10-15 mph.

.WEDNESDAY...

Sky/weather.........Partly cloudy (60-70 percent cloud cover).
                    Chance of snow.
CWR.................10 percent.
Chance of pcpn......40 percent.
Max temperature.....21-25.
Min humidity........82-86 percent.
Wind (20 ft)........Northwest winds 5-10 mph.
Mixing height.......3300 ft AGL.
   Climatology......30-40th Percentile.
Transport winds.....North winds 10-15 mph.
Clearing index......550.

$$
Forecaster...Traphagan
Requested by...Sarah Jorgenson
Type of request...PRESCRIBED
.TAG 2526823.0/SLC
.DELDT 12/01/25
.FormatterVersion 2.0.0
.EMAIL sarah.jorgenson@usda.gov