Suppression Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
218
FNUS75 KRIW 191128
FWSRIW
Spot Forecast for Horse...USFS
National Weather Service Riverton WY
528 AM MDT Sat Jul 19 2025
Forecast is based on forecast start time of 0600 MDT on July 19.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Periods of clouds this morning, with dry conditions and light
winds. Showers and thunderstorms will become possible between 1300
and 1400, progressing eastward through the afternoon. This
activity is expected to end by 1800. Wind gusts around 50 mph will
be possible with the storms, with a 40% chance for small hail.
Skies will clear out as convection exits eastward, with only
partly cloudy skies possible through the night. RH recovery will
be fair tonight. Conditions will remain dry Sunday and winds
somewhat lighter. Any clouds will develop after 1500, but will
remain partly cloudy.
...Thunderstorms imply strong gusty and erratic winds...
.TODAY...
Sky/weather.........Mostly sunny (25-35 percent). Chance of rain
showers and slight chance of thunderstorms in
the afternoon.
CWR.................0 percent.
Chance of pcpn......40 percent.
Chance of thunder...24 percent.
Max temperature.....Around 71.
Min humidity........27 percent.
Wind (20 ft)........West winds 8 to 13 mph. Gusts up to 22 mph
increasing to 24 mph late in the afternoon.
Gusty and erratic winds expected near
thunderstorms late in the afternoon.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......500 ft AGL until 0900, then 2500 ft AGL until
1000, then 4500 ft AGL until 1100, then 8500 ft
AGL until 1300, then 10000 ft AGL until 1600,
then 8500 ft AGL.
Transport winds.....West 15 to 23 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30 20 15 10 5 5 10 25 35 40 50 35
Weather cov..... SCH CHC CHC SCH
Weather type.... RW RW RW RW
Tstm cov........ SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 10 10 10 10 10 20 30 40 20 10
Chc of thdr (%).0 0 0 10 10 10 10 20 20 20 20 10
Temp............47 47 51 57 61 65 67 67 67 67 67 67
RH..............72 72 75 63 57 48 44 42 41 40 39 38
20 FT wind dir..W W W W W W W W SW SW SW W
20 FT wind spd..8 8 8 8 10 11 12 12 11 11 12 13
20 FT wind gust.11 11 12 13 14 16 17 17 17 17 18 19
Ridge wind dir..W W W W W W W W SW SW SW W
Ridge wind spd..15 15 15 15 15 20 20 20 20 20 20 20
Mix hgt (kft)...0.5 0.5 0.5 2.5 4.5 7.0 8.5 9.5 10 9.0 7.5 8.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.15 15 15 15 17 18 20 20 21 22 23 23
SDspl kt-ft/10007 7 8 30 65 112 147 161 176 168 151 165
.TONIGHT...
Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Min temperature.....Around 48.
Max humidity........45 percent.
Wind (20 ft)........West winds 7 to 14 mph with gusts to around 19
mph until 2400, then light.
Ridgetop wind.......West 15 to 20 mph until 0300, then around 10
mph.
Mixing height.......6000 ft AGL until 2000, then 500 ft AGL.
Transport winds.....West 13 to 22 mph until 0300, then around 12
mph.
Smoke dispersal.....Very good until 2000, then poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........30 25 20 20 20 20 20 25 25 25 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 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............67 64 62 59 57 54 52 51 51 50 49 49
RH..............38 38 39 40 41 42 42 41 39 39 39 41
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..14 12 10 7 7 7 6 6 6 6 6 6
20 FT wind gust.19 18 16 13 11 10 10 8 8 7
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..20 20 15 15 15 15 15 15 15 10 10 10
Mix hgt (kft)...7.5 6.0 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 W W W W W W W W W
Transp wind spd.22 21 17 14 14 14 13 13 13 12 12 12
SDspl kt-ft/1000140 111 15 7 7 7 6 6 6 6 6 6
.SUNDAY...
Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...3 percent.
Max temperature.....Around 74.
Min humidity........22 percent.
Wind (20 ft)........Light winds until 0900, then west 7 to 13 mph
with gusts to around 22 mph.
Ridgetop wind.......Southwest 10 to 15 mph until 1100, then west
around 20 mph.
Mixing height.......1500 ft AGL until 0900. 11000 ft AGL after
1200.
Transport winds.....West 10 to 17 mph until 1000, then 22 to 25
mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25 35 20 5 5 5 10 10 15 15 20 20
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............48 51 56 61 65 68 70 72 73 73 73 73
RH..............43 34 33 31 29 27 25 23 22 21 21 21
20 FT wind dir..W W SW SW SW SW W W W W W W
20 FT wind spd..5 6 6 7 9 11 12 13 13 13 13 12
20 FT wind gust.6 11 12 14 17 19 21 22 22 22 22 21
Ridge wind dir..W W SW SW SW SW W W W W W W
Ridge wind spd..10 10 15 15 15 20 20 20 20 20 20 20
Mix hgt (kft)...0.5 0.5 1.5 3.5 7.0 8.5 9.5 10 11 11 11 11
Transp wind dir.W W SW W W W W W W W W W
Transp wind spd.10 12 13 17 22 24 25 25 25 25 24 24
SDspl kt-ft/10005 6 15 55 133 173 210 220 230 240 228 227
.FORECAST DAYS 3 THROUGH 5...
.MONDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
in the lower 50s. Highs in the mid 70s. West-southwest winds
15-25 mph.
.TUESDAY...
Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.
West winds 15-25 mph.
.WEDNESDAY...
Mostly clear. Lows in the upper 40s. Highs in the lower 70s.
West-southwest winds 10-20 mph.
$$
Forecaster...LaVoie
Requested by...Jacob Noren
Type of request...WILDFIRE
.TAG 2518019.4/RIW
.DELDT 07/19/25
.FormatterVersion 2.0.0
.EMAIL jacob.noren@usda.gov