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FNUS75 KSLC 182107
FWSSLC

Spot Forecast for Rocky Canyon...NUIFC
National Weather Service Salt Lake City UT
307 PM MDT Tue Aug 18 2026

Forecast is based on forecast start time of 1530 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Increasingly hotter and drier conditions will spread over
the fire area over the next couple of days before moisture
arrives into Utah. Until then, anticipate conditions to warm by
3-5 degrees on Wednesday with humidity dropping by 3-6 percent as
compared to Tuesday. West to northwest winds are expected through
the afternoon hours each day, with the most pronounced northwest
winds expected through East Canyon on the southwest side of the
fire. During the overnight period, downsloping winds are expected
across the fire alongside fair to good overnight humidity
recovery. Moisture spreads into Utah late this week/ early in the
weekend bringing potential for showers and thunderstorms over the
fire area, as well as higher afternoon humidity.

.REST OF TODAY...

Sky/weather.........Partly cloudy (25-35 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of lightning.8 percent.
Max temperature.....Upper Elevations: 87-91.
Lower Elevations: 81-85.
Min humidity........23-28 percent.
Wind (20 ft)........West to northwest 10-13 mph with gusts up to 20-25 mph
on higher exposure slopes and ridges.
Mixing height.......10000 ft AGL (70-80th Percentile).
Transport winds.....West around 18 mph.

.TONIGHT...

Sky/weather.........Mostly clear (25-35 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Min temperature.....56-58.
Max humidity........65-75 percent.
Wind (20 ft)........Terrain driven (downslope) 4-7 mph.
Transport winds.....West around 16 mph becoming east around 6 mph
                    overnight.

.WEDNESDAY...

Sky/weather.........Mostly sunny (20-30 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....Upper Elevations: 90-94.
Lower Elevations: 84-88.
Min humidity........17-23 percent.
Wind (20 ft)........Terrain driven (upslope) 4-7 mph in the morning,
becoming west to northwest 8-10 mph with gusts
to around 15 mph after 1100-1200.
Mixing height.......10400 ft AGL (70-80th Percentile).
Transport winds.....West 10 to 14 mph.

$$
Forecaster...Webber
Requested by...Morgan Mendenhall
Type of request...WILDFIRE
.TAG 2619568.7/SLC
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL morganmendenhall@utah.gov