159
FNUS75 KGJT 172323
FWSGJT

Spot Forecast for Swiss Roll Wildfire...USDA
National Weather Service Grand Junction CO
523 PM MDT Thu Sep 17 2026

Forecast is based on forecast start time of 1800 MDT on September 17.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Rainfall is expected through Thursday evening with a chance of
powerful thunderstorms to roll through around 1900-2000 MDT.
Overnight, occasional rain showers should still be expected. Storm
coverage becomes more scattered Friday afternoon, but it is more
likely than not that wetting rain will occur over the spot
location. Thunderstorms Friday afternoon will be capable of
erratic gusts over 30 mph. Storms are more isolated Saturday.

.TONIGHT...

Sky/weather.........Cloudy (90-100 percent). Rain showers and
                    chance of thunderstorms in the evening, then
                    chance of rain showers and slight chance of
                    thunderstorms overnight.
CWR.................80 percent.
Min temperature.....48-53.
Max humidity........93-98 percent.
Wind (20 ft)........Southwest winds 4-8 mph. Gusty and erratic winds
                    expected near thunderstorms.
Smoke dispersal.....Poor (4000-9000 knot-ft).
Mixing height.......1000 ft AGL.
Transport winds.....Southwest 10 mph.
Chance of thunder...35 percent.

.FRIDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Rain showers
                    likely through the day. Slight chance of
                    thunderstorms in the morning then chance of
                    thunderstorms in the afternoon.
CWR.................60 percent.
Max temperature.....52-57.
Min humidity........53-58 percent.
Wind (20 ft)........Southwest winds 5-10 mph. Gusty and erratic winds
                    expected near thunderstorms.
Smoke dispersal.....Poor (16000 knot-ft) increasing to fair in the
                    afternoon.
Mixing height.......3700 ft AGL.
Transport winds.....Southwest 12 mph.
Chance of thunder...45 percent.

.FRIDAY NIGHT...

Sky/weather.........Mostly cloudy (60-70 percent). Chance of rain
                    showers and thunderstorms in the evening, then
                    slight chance of showers and thunderstorms
                    overnight.
CWR.................20 percent.
Min temperature.....43-48.
Max humidity........68-73 percent.
Wind (20 ft)........Downslope/downvalley winds 3-5 mph. Gusty and
                    erratic winds expected near thunderstorms.
Smoke dispersal.....Poor (3000-15000 knot-ft).
Mixing height.......1700 ft AGL.
Transport winds.....Southwest 10 mph.
Chance of thunder...30 percent.

.SATURDAY...

Sky/weather.........Partly sunny (60-70 percent). Chance of showers
                    and thunderstorms throughout the day.
CWR.................10 percent.
Max temperature.....55-60.
Min humidity........34-39 percent.
Wind (20 ft)........Southwest winds 5-10 mph increasing to 12-16
                    mph with gusts of 20-24 mph by noon MDT. Gusty
                    and erratic winds expected near thunderstorms.
Smoke dispersal.....Good increasing to very good in the afternoon.
Mixing height.......4400 ft AGL increasing to 6500 ft AGL in the
                    afternoon.
Transport winds.....Southwest 20 mph.
Chance of thunder...35 percent.

$$
Forecaster...Braeden Winters
Requested by...Cameron Castle
Type of request...WILDFIRE
.TAG 2621670.12/GJT
.DELDT 09/17/26
.FormatterVersion 2.0.0
.EMAIL ccastle@elkcreekfire.org,thadmckain@gmail.com