046
FNUS75 KSLC 031150
FWSSLC

Spot Forecast for Black Canyon Fire...RIST
National Weather Service Salt Lake City UT
550 AM MDT Thu Sep 3 2026

Forecast is based on forecast start time of 0600 MDT on September 03.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Mild, dry, and windy conditions will continue over the
fire area today, with relative humidity falling by around 5
percent as compared to yesterday. The pairing of strong afternoon
winds (gusts up to 30-35 mph) and relative humidity as low as 15
percent in the lower elevations, will create elevated to near-
critical fire weather conditions. The dry air mass will help to
favor largely clear skies, bringing high solar radiation over the
landscape. Winds temporarily relax during the overnight period,
but are expected to pick back up in intensity by daybreak on
Friday. Moisture will increase on Friday, bringing at least a
slight chance for isolated showers and thunderstorms during the
afternoon hours.

.TODAY...

Sky/weather.........Mostly sunny (10-20 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....65-69 lower elevations. 57-60 upper elevations.
Min humidity........15-20 percent.
Wind (20 ft)........Ridges: Southwest 20-25 mph with gusts up to 35 mph.
Slopes: Downslope 4-7 mph before 1100, then becoming
southwest 10-15 mph with gusts around 25 mph.
Mixing height.......8300 ft AGL (60-70th Percentile).
Transport winds.....Southwest 18 to 21 mph.

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.3 percent.
Min temperature.....43-45 lower elevations. 37-41 upper elevations.
Max humidity........60-70 percent.
Wind (20 ft)........Ridges: Southwest around 10 mph.
Slopes: Downslope 4-7 mph.
Transport winds.....Southwest 15 to 20 mph.

.FRIDAY...

Sky/weather.........Mostly sunny (5-15 percent cloud cover) then
                    becoming partly cloudy (40-50 percent cloud
                    cover). Isolated showers and thunderstorms in
                    the afternoon.
CWR.................5 percent.
Chance of pcpn......20 percent.
Chance of lightning.15 percent.
Max temperature.....65-69 lower elevations. 57-60 upper elevations.
Min humidity........30-40 percent.
Wind (20 ft)........Ridges: Southwest around 20 mph with gusts up to 35 mph.
Slopes: Downslope 4-7 mph before 1000, then becoming southwest
10-12 mph with gusts to 25 mph.
Mixing height.......7400 ft AGL (50-60th Percentile).
Transport winds.....Southwest 15 to 20 mph.

$$
Forecaster...Webber
Requested by...Ruth Kohler
Type of request...WILDFIRE
.TAG 2621050.1/SLC
.DELDT 09/03/26
.FormatterVersion 2.0.0
.EMAIL ruth_kohler@firenet.gov,john_pell@firenet.gov,jeremy_hruska@firenet.gov,anthony_collins@firenet.gov