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FNUS75 KSLC 181731
FWSSLC

Spot Forecast for Henrie Knolls North Piles...USFS
National Weather Service Salt Lake City UT
1031 AM MST Tue Nov 18 2025

Forecast is based on ignition time of 1000 MST on November 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...An approaching low pressure system is currently
producing widespread showers across southern Utah, with current
snow levels likely just below the spot location. Precipitation
type is the greatest forecast challenge today, as an increase of a
few more degrees will likely transition snow over to a mix of
rain and snow this afternoon. However, there is still a 40%
chance that only snow falls through the afternoon. In this case,
snow totals would be a bit higher, around 6-10" through Wednesday
afternoon (1-2" through this evening, 2-4" overnight, then another
2-4" on Wednesday). Chances are lower for any rain mixing in on
Wednesday afternoon. As far as timing, the heaviest precipitation
will likely fall this afternoon before a break in the action
around 1900-2400 this evening. Heavier precipitation will return
overnight before becoming more showery in nature after noon
Wednesday. Clearing indices will remain above 500 each afternoon
despite lower mixing heights.

.TODAY...

Sky/weather.........Mostly cloudy (90-100 percent cloud cover).
                    Mix of rain and snow likely then snow likely
                    after 1600.
CWR.................85 percent.
Chance of pcpn......90 percent.
Chance of lightning.5 percent.
Max temperature.....34-37.
Min humidity........87-90 percent.
Wind (20 ft)........Southeast winds 5-10 mph.
Mixing height.......2000 ft AGL.
   Climatology......20-30th Percentile.
Transport winds.....Southeast 19 to 20 mph.
Clearing index......550.

.TONIGHT...

Sky/weather.........Mostly cloudy (80-90 percent cloud cover). Snow
                    likely.
CWR.................65 percent.
Chance of pcpn......75 percent.
Chance of lightning.0 percent.
Min temperature.....28-31.
Max humidity........97-100 percent.
Wind (20 ft)........South-southeast winds 4-8 mph.
Mixing height.......1000 ft AGL.
Transport winds.....South 18 to 20 mph.

.WEDNESDAY...

Sky/weather.........Mostly cloudy (80-90 percent cloud cover). Snow
                    likely.
CWR.................60 percent.
Chance of pcpn......80 percent.
Chance of lightning.5 percent.
Max temperature.....32-35.
Min humidity........85-88 percent.
Wind (20 ft)........Southeast winds 5-10 mph.
Mixing height.......2600 ft AGL.
   Climatology......20-30th Percentile.
Transport winds.....South 18 to 20 mph.
Clearing index......720.

$$
Forecaster...Cunningham
Requested by...McHenry
Type of request...PRESCRIBED
.TAG 2526295.0/SLC
.DELDT 11/18/25
.FormatterVersion 2.0.0
.EMAIL korby.fraughton@usda.gov,john.mchenry@usda.gov,noah.humphrey@usda.gov