193
FNUS75 KRIW 252023
FWSRIW

Spot Forecast for Horse...WYBTF
National Weather Service Riverton WY
223 PM MDT Wed Jun 25 2025

Forecast is based on forecast start time of 0700 MDT on June 26.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Not much change in the forecast for Thursday. A slight warming and
drying trend will occur Thursday and continue Friday. Winds will
remain light in nocturnal downslope/downvalley drainage flows
through 1000 Thursday morning, then become westerly and increase
in speed. Gusts could reach 25 mph briefly at times during the
afternoon, but should generally stay around the 15 to 20 mph
range. These westerly winds will continue through around sunset
then quickly decrease, returning to light nocturnal
downslope/downvalley winds overnight. Friday will see a very
similar pattern with gusts more likely to reach 25 mph or perhaps
stronger, upwards of 30 mph, at times through the afternoon. RHs
both Thursday and Friday will drop to around 20 percent during the
afternoon, recovering to around 45 percent overnight. A very
similar diurnal pattern in both wind and RH will continue
Saturday. No precipitation is expected through Saturday.

...Thunderstorms imply strong gusty and erratic winds...

.THURSDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...2 percent.
Max temperature.....Around 67.
Min humidity........22 percent.
Wind (20 ft)........Light winds until 1100, then west 8 to 12 mph
                    with gusts to around 18 mph.
Ridgetop wind.......Southwest 10 to 15 mph until 1400, then west
                    around 20 mph.
Mixing height.......1000 ft AGL until 0900. 11000 ft AGL after
                    1200.
Transport winds.....Southwest 9 to 18 mph until 1500, then west 21
                    to 22 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1500.


.THURSDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Min temperature.....Around 46.
Max humidity........45 percent.
Wind (20 ft)........West winds 7 to 13 mph with gusts to around 19
                    mph until 2100, then light.
Ridgetop wind.......West 15 to 20 mph until 2100, then southwest
                    around 10 mph.
Mixing height.......10500 ft AGL until 1900. 500 ft AGL after 2000.
Transport winds.....West 15 to 22 mph until 2100, then 10 to 12
                    mph.
Smoke dispersal.....Excellent until 2000. Poor after 2100.

.FRIDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Max temperature.....Around 70.
Min humidity........25 percent.
Wind (20 ft)........Light winds until 1000, then west 8 to 15 mph
                    with gusts to around 25 mph.
Ridgetop wind.......West 10 to 15 mph until 1200, then 20 to 25
                    mph.
Mixing height.......2000 ft AGL until 0900. 10500 ft AGL after
                    1200.
Transport winds.....Southwest 10 to 17 mph until 1100, then west 23
                    to 28 mph.
Smoke dispersal.....Poor until 0800. Excellent after 1200.


.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Mostly clear. Lows in the upper 40s. Highs around 70. West winds
around 8 mph.
.SUNDAY...
Mostly clear. Lows in the upper 40s. Highs in the lower 70s. West
winds around 8 mph.
.MONDAY...
Mostly clear. Lows in the upper 40s. Highs in the mid 70s. Light
winds.

$$
Forecaster...Hensley
Requested by...Anna Sammer, PSC3
Type of request...WILDFIRE
.TAG 2515958.13/RIW
.DELDT 06/25/25
.FormatterVersion 2.0.0
.EMAIL anna_sammer@firenet.gov