556
FNUS75 KSLC 112047
FWSSLC

Spot Forecast for Gap Fire...USFS
National Weather Service Salt Lake City UT
247 PM MDT Fri Jul 11 2025

Forecast is based on forecast start time of 0600 MDT on July 12.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...High pressure will continued to build over the fire area on Saturday,
mostly clear skies, hot temperatures, and dry conditions at all
elevations. Heat Risk in the lowest elevations will rise to
"moderate" (level 3 of 5) as high temperatures begin to warm under
this area of high pressure, bringing an increased risk of heat
related illness to those without effective cooling and/ or
adequate hydration. Temperatures will warm by about 2-3 degrees
each day through at least Sunday, with afternoon minimum humidity
dropping by around 1 percent each day. Poor overnight recoveries (less than
30%) are expected to make a return by Saturday night, especially
in the thermal belts (between 500-1000ft AGL). Afternoon winds are expected
to remain out of the northwest, with peak gusts upwards of 20 mph. A return
to downslope/ downvalley flows will occur after sunset each day.

.SATURDAY...

Sky/weather.........Sunny (0-10 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.1 percent.
Max temperature.....94-96.
Min humidity........10-12 percent.
Wind (20 ft)........Terrain driven 3-6 mph in the morning, becoming northwest
7-12 mph in the late morning. Winds gusting upwards of
20 mph during the afternoon out of the northwest, especially
on the eastern perimeter of the fire.
Mixing height.......12500 ft AGL.
   Climatology......80-90th Percentile.
Transport winds.....Northwest 8 to 16 mph.

.SATURDAY NIGHT...

Sky/weather.........Clear (0-10 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Min temperature.....62-64.
Max humidity........28-30 percent.
Wind (20 ft)........Northwest winds 6-11 mph with gusts to around
                    15-20 mph becoming terrain driven (downslope) 3-6 mph
after about 2100-2200.
Transport winds.....Northwest around 16 mph becoming northeast
                    around 8 mph overnight.

.SUNDAY...

Sky/weather.........Mostly sunny (5-15 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.1 percent.
Max temperature.....96-98.
Min humidity........9-11 percent.
Wind (20 ft)........Terrain driven (downslope) 4-7 mph in the morning,
becoming northwest 6-10 mph in the late morning/ early afternoon
with peak gusts around 15 mph.
Mixing height.......16400 ft AGL
   Climatology......99-100th Percentile.
Transport winds.....East around 8 mph becoming northwest in the
                    afternoon.

$$
Forecaster...Webber
Requested by...Sierra Sampson
Type of request...WILDFIRE
.TAG 2517821.0/SLC
.DELDT 07/11/25
.FormatterVersion 2.0.0
.EMAIL sierra.sampson@usda.gov