Spot Forecast
Issued by NWS Riverton, WY

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214
FNUS75 KRIW 141129
FWSRIW

Spot Forecast for Horse...USFS
National Weather Service Riverton WY
529 AM MDT Mon Jul 14 2025

Forecast is based on forecast start time of 0600 MDT on July 14.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Today will be another warm day, with temperatures averaging close to
Sundays highs and humidity around Sundays values as well. Wind will
increase somewhat today as a cold front approaches Wyoming from the
north. Gusts up to 20 mph are possible after 1400 with mainly
light wind through most of the morning. We can`t rule out a stray
shower or thunderstorm, mainly between the hours of 1400 and 1800.
The chance is only around 10 percent though. Mixing and smoke dispersal
will be excellent in the afternoon after morning inversions break
around 1000. The cold front will move closer on Tuesday, bringing a
better chance of showers and thunderstorms Tuesday afternoon (around
a 1 in 3 chance), although the chance of wetting rain will remain
very low.

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

.TODAY...

Sky/weather.........Mostly sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...10 percent.
Max temperature.....Around 76.
Min humidity........20 percent.
Wind (20 ft)........Light winds until 1100, then west 8 to 12 mph
                    with gusts to around 18 mph.
Ridgetop wind.......West 10 to 15 mph until 1500, then 15 to 20
                    mph.
Mixing height.......500 ft AGL until 0900 increasing to 11500 ft AGL
                    after 1300.
Transport winds.....West 10 to 18 mph.
Smoke dispersal.....Poor until 0900. increasing to excellent after
                    1200.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........0   0   0   0   5   10  15  20  20  20  25  25
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   0   0   10  10  10  10
Temp............50  51  55  66  68  71  74  75  76  76  76  75
RH..............46  48  45  35  31  26  24  22  20  21  21  22
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..6   6   5   6   6   8   9   10  12  12  13  12
20 FT wind gust.8   8   7   8   10  13  14  16  18  18  20  18
Ridge wind dir..W   W   W   W   W   W   W   W   W   W   W   W
Ridge wind spd..10  10  10  10  15  15  15  15  15  20  20  15
Mix hgt (kft)...0.5 0.5 0.5 3.0 5.5 8.0 9.5 11  11  12  11  9.0
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.12  12  10  12  13  15  16  17  17  18  18  17
SDspl kt-ft/10006   6   6   31  63  102 134 155 162 182 167 136

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...3 percent.
Min temperature.....Around 53.
Max humidity........39 percent.
Wind (20 ft)........West winds 7 to 9 mph until 2400, then light.
                    Gusts up to 17 mph.
Ridgetop wind.......West 10 to 15 mph.
Mixing height.......7500 ft AGL until 2000, then 500 ft AGL.
Transport winds.....West 12 to 16 mph.
Smoke dispersal.....Very good until 2000, then poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........25  25  20  15  10  5   5   5   10  10  15  15
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............74  73  71  66  61  59  57  57  56  55  54  53
RH..............26  25  28  33  37  38  38  38  39  39  38  39
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   SW
20 FT wind spd..9   9   9   8   8   7   6   6   6   6   6   6
20 FT wind gust.14  14  14  13  13  11  10  8   8   8   10  10
Ridge wind dir..W   W   W   W   W   W   W   W   W   W   W   SW
Ridge wind spd..15  15  15  15  15  15  15  10  10  10  15  15
Mix hgt (kft)...8.0 7.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W   W   W   NW  W   W   W   W   W   W   W   W
Transp wind spd.16  16  16  15  15  14  13  12  12  12  13  13
SDspl kt-ft/1000112 102 15  7   7   7   6   6   6   6   6   6

.TUESDAY...

Sky/weather.........Partly sunny (30-40 percent). Chance of
                    rain showers and thunderstorms in the afternoon.
CWR.................0 percent.
Chance of pcpn......30 percent.
Chance of thunder...30 percent.
Max temperature.....Around 73.
Min humidity........29 percent.
Wind (20 ft)........Light winds until 1000, then west 7 to 11 mph
                    with gusts to around 17 mph. Gusty and erratic
                    winds expected near thunderstorms.
Ridgetop wind.......West 10 to 15 mph until 1300, then around 20
                    mph.
Mixing height.......1500 ft AGL until 0900, increasing to 9500 ft
                    after 1200.
Transport winds.....West 10 to 17 mph until 1000, then 18 to 22
                    mph.
Smoke dispersal.....Poor until 0900, then fair until 1000, then
                    good early in the morning increasing to very
                    good in the afternoon until 1200, then very
                    good early in the morning increasing to
                    excellent in the afternoon until 1600, then
                    very good.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10  15  25  10  15  25  30  35  45  50  50  55
Weather cov.....                        CHC CHC CHC CHC CHC CHC
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH CHC CHC CHC
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   30  30  30  30  30  30
Chc of thdr (%).0   0   0   0   0   0   20  20  20  30  30  30
Temp............53  54  59  64  67  70  72  73  73  73  72  70
RH..............38  38  36  33  31  30  29  29  30  32  35  38
20 FT wind dir..W   SW  W   W   W   W   W   W   W   W   W   SW
20 FT wind spd..5   5   6   6   7   9   10  11  11  11  11  11
20 FT wind gust.7   7   8   10  11  14  16  17  17  17  17  17
Ridge wind dir..W   SW  W   W   W   W   W   W   W   W   W   SW
Ridge wind spd..10  10  10  15  15  15  15  20  20  20  20  20
Mix hgt (kft)...0.5 0.5 1.5 3.5 6.0 7.5 9.5 9.0 9.0 8.5 8.0 8.0
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.10  10  12  17  20  21  22  21  21  20  18  18
SDspl kt-ft/10005   7   15  55  98  136 177 158 147 129 115 110

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Southwest winds around 9 mph.
.THURSDAY...
Mostly clear. Lows in the mid 40s. Highs in the mid 70s.
Southwest winds around 8 mph.
.FRIDAY...
Mostly clear. Lows around 50. Highs in the mid 70s. West winds
around 8 mph.

$$
Forecaster...Hattings
Requested by...Cass Urbigkit
Type of request...WILDFIRE
.TAG 2517499.5/RIW
.DELDT 07/14/25
.FormatterVersion 2.0.0
.EMAIL cass.urbigkit@wyo.gov