384
FNUS75 KSLC 201231
FWSSLC

Spot Forecast for Spring Canyon RX...USFS
National Weather Service Salt Lake City UT
631 AM MDT Sun Sep 20 2026

Forecast is based on ignition time of 0700 MDT on September 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Conditions cool down and dry out notably today and
Monday following the passage of a cold front. This will result in
lower humidities this afternoon, decreasing further into Monday
afternoon. Come Tuesday, moisture surges from the south raising
humidities once again with an increase in probabilities for
showers and thunderstorms near the burn site.

.REST OF TODAY...

Sky/weather.........Mostly sunny (5-15 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....57-59.
Min humidity........38-41 percent.
Wind (20 ft)........Downslope winds 2 to 4 mph becoming west 3 to 9 mph
                    in the late morning and afternoon.
Mixing height.......5000 ft AGL (40-50th Percentile).
Transport winds.....West 9 to 10 mph.
Clearing index......500.

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Min temperature.....35-37.
Max humidity........78-80 percent.
Wind (20 ft)........West winds 5 to 7 mph becoming downslope 5 to 9
                    mph in the late evening and overnight.
Mixing height.......600 ft AGL.
Transport winds.....Northwest around 8 mph becoming east overnight.

.MONDAY...

Sky/weather.........Mostly sunny (25-35 percent cloud cover) then
                    becoming partly cloudy (35-45 percent cloud
                    cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....63-65.
Min humidity........26-29 percent.
Wind (20 ft)........Downslope winds 6 to 8 mph becoming southwest 5 to 8
                    mph in the afternoon.
Mixing height.......7300 ft AGL (50-60th Percentile).
Transport winds.....South around 9 mph becoming west around 12 mph
                    in the afternoon.
Clearing index......770.

$$
Forecaster...Worster
Requested by...Thomas Bolke
Type of request...PRESCRIBED
.TAG 2622011.2/SLC
.DELDT 09/20/26
.FormatterVersion 2.0.0
.EMAIL jason.bullough@usda.gov,thomas.bolke@usda.gov