678
FNUS75 KSLC 202025
FWSSLC

Spot Forecast for Widemouth 2...Forest Service
National Weather Service Salt Lake City UT
225 PM MDT Sun Sep 20 2026

Forecast is based on forecast start time of 0600 MDT on September 21.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Dry and stable conditions with light and diurnally driven
winds will gradually transition into a more unstable pattern late
Monday into Tuesday as an area of low pressure moves into the
Great Basin. Showers and Thunderstorms will develop across
southwestern Utah Monday evening and gradually move to the north
through the day on Tuesday. These showers and storms will be
moving from south to north at a pretty fast pace so that will
limit flooding to areas that experience storms moving over the
same area or under the heaviest storms that could produce
.5-1"/hour rainfall rates. Gusty and erratic winds along with hail
and frequent lightning will also be possible. Conditions will
become more dry and stable overnight Tuesday into Wednesday as
this low pushes off to the northeast. Mostly dry conditions will
persist for the remainder of the week with moisture staying
confined to southeastern Utah.

.MONDAY...

Sky/weather.........Partly cloudy (45-55 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....81-84.
Min humidity........30-33 percent.
Wind (20 ft)........Light (2-5 mph) upslope flow.
Mixing height.......8000 ft AGL (70-80th Percentile).
Transport winds.....South 7 to 10 mph.

.MONDAY NIGHT...

Sky/weather.........Partly cloudy (60-70 percent cloud cover).
                    Chance of rain showers and thunderstorms overnight.
CWR.................25 percent.
Chance of pcpn......60 percent.
Chance of lightning.10 percent.
Min temperature.....55-58.
Max humidity........75-78 percent.
Wind (20 ft)........Light drainage flow winds 2 to 6 mph. Gusty
                    and erratic winds expected near thunderstorms
                    overnight.
Mixing height.......500 ft AGL.
Transport winds.....South around 10 mph.

.TUESDAY...

Sky/weather.........Partly cloudy (60-70 percent cloud cover) then
                    becoming mostly cloudy (75-85 percent cloud
                    cover). Chance of rain showers and thunderstorms.
CWR.................40 percent.
Chance of pcpn......70 percent.
Chance of lightning.26 percent.
Max temperature.....76-79.
Min humidity........55-58 percent.
Wind (20 ft)........Southeast winds 2 to 7 mph becoming southwest 3
                    to 8 mph with gusts to around 16 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......6500 ft AGL (50-60th Percentile).
Transport winds.....South 9 to 14 mph.

$$
Forecaster...Mahan
Requested by...Sierra Sampson
Type of request...WILDFIRE
.TAG 2622195.0/SLC
.DELDT 09/20/26
.FormatterVersion 2.0.0
.EMAIL sierra.sampson@usda.gov