135
FNUS75 KSLC 181458
FWSSLC

Spot Forecast for Cottonwood fire...USFS
National Weather Service Salt Lake City UT
858 AM MDT Tue Aug 18 2026

Forecast is based on forecast start time of 0800 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Increasingly hot and dry conditions are expected to build
over the fire area through the next couple of days, with a very
low chance for an isolated shower or thunderstorm over the high
Tushar ridgeline. Today, terrain driven flows will transition to a
broad west to southwesterly winds over the fire area, with peak
gusts to around 20 mph on higher exposure west-facing slopes and
high elevation ridges. After sunset, winds will transition back to
a terrain driven flow on slopes and in drainages, with ridgetops
maintaining a westerly wind through the overnight hours.
Temperatures increase by 2-3 degrees on Wednesday with humidity
falling by 3-5 percent.

.REST OF TODAY...

Sky/weather.........Partly cloudy (40-50 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....Upper Elevations: 58-63.
Lower Elevations: 83-85
Min humidity........Upper Elevations: 35-40 percent.
Lower Elevations: 20-25 percent.
Wind (20 ft)........Terrain driven through 1100, then becoming
west to southwest around 10 mph with gusts
to around 20 mph, especially on exposed
slopes and ridges.

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.4 percent.
Min temperature.....Upper Elevations: 48-52.
 Lower Elevations: 60-65.
Max humidity........Upper Elevations and drainages: 50-65 percent.
Lower Elevations and slopes: 40-50 percent.
Wind (20 ft)........Terrain driven (downslope) 5-8 mph on slopes and
in drainages. West to west-northwest around 10-14
mph on high ridges.

.WEDNESDAY...

Sky/weather.........Mostly sunny (25-35 percent cloud cover) then
                    becoming partly cloudy (35-45 percent cloud
                    cover).
CWR.................0 percent.
Chance of pcpn......5 percent.
Chance of lightning.5 percent.
Max temperature.....Upper Elevations: 60-65.
Lower Elevations: 85-88.
Min humidity........Upper Elevations: 30-35 percent.
Lower Elevations: 17-21 percent.
Wind (20 ft)........Terrain driven (upslope) 4-7 mph with gusts
up to 15 mph from the west on higher exposure
slopes and ridges.

$$
Forecaster...Webber
Requested by...Kendell White
Type of request...WILDFIRE
.TAG 2619914.0/SLC
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL kendellwhite39@gmail.com