809
FNUS75 KRIW 052115
FWSRIW

Spot Forecast for Horse Fire...USFS
National Weather Service Riverton WY
315 PM MDT Sat Jul 5 2025

Forecast is based on forecast start time of 0700 MDT on July 06.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

The day begins with west winds under 10 mph. Winds begin to increase
after 1000L, with sustained speeds around 15 mph, and gusts 20 to 25
mph, in the afternoon. Winds begin to decrease after 2000L, with
light west to southwest winds around 5 to 8 mph Sunday night.

Afternoon RH Sunday afternoon trends around 10 percent drier than
Saturday. It trends warmer and drier through the first half of the
week. Chance of rain is near zero through at least Wednesday.

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

.SUNDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 70.
Min humidity........25-29 percent.
Wind (20 ft)........Light west winds until 1000, then west around
                    12 mph with gusts 20 to 25 mph in the afternoon.
Ridgetop wind.......West 10 to 15 mph until 1200, then around 20
                    mph.
Mixing height.......1500 ft AGL until 0900. 8500 ft AGL after 1400.
Transport winds.....West 10 to 15 mph until 1100, then 20 to 25
                    mph.
Smoke dispersal.....Poor until 0900 increasing to excellent in the
                    after 1400.

.SUNDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 45.
Max humidity........38-42 percent.
Wind (20 ft)........West winds around 10 mph with gusts to around 18
                    mph until 2200, then light west around 6 mph.
Ridgetop wind.......West 15 to 20 mph until 2300, then around 10
                    mph.
Mixing height.......6500 ft AGL until 1900. 500 ft AGL after 2000.
Transport winds.....West 12 to 20 mph until 2400, then around 8 mph.
Smoke dispersal.....Very good early in the evening. Poor after 2100.

.MONDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 73.
Min humidity........19-23 percent.
Wind (20 ft)........Light west winds until 1200, then west around 10 mph
                    with gusts to around 20 mph in the afternoon.
Ridgetop wind.......West 10 to 15 mph.
Mixing height.......2000 ft AGL until 0900. 10500 ft AGL after
                    1500.
Transport winds.....West 10 to 15 mph until 1200, then around 20 mph.
Smoke dispersal.....Poor until 0800 increasing to excellent in the afternoon
                    after 1200.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...
Mostly clear. Lows around 50. Highs in the mid 70s. West winds
around 10 mph, with afternoon gusts around 20 mph.
Afternoon RH around 18 percent.
.WEDNESDAY...
Mostly clear. Lows in the lower 50s. Highs in the upper 70s.
West-southwest winds around 10 mph, with afternoon gusts around
20 mph. Afternoon RH around 15 percent.
.THURSDAY...
Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.
West-northwest winds around 12 mph, with afternoon gusts around
20 mph. Afternoon RH around 25 percent.

$$
Forecaster...Wittmann
Requested by...Rebecca Hird
Type of request...WILDFIRE
.TAG 2516836.7/RIW
.DELDT 07/05/25
.FormatterVersion 2.0.0
.EMAIL rhird@blm.gov,nws.riverton@noaa.gov