Suppression Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
574
FNUS75 KRIW 311201
FWSRIW
Spot Forecast for Horse Fire...USFS
National Weather Service Riverton WY
601 AM MDT Thu Jul 31 2025
Forecast is based on forecast start time of 0700 MDT on July 31.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Drier air will lead to low Min RH values near 20 percent across the
area. Light morning winds will gradually shift to the south and
increase to around 15 mph. Periodic gusts of 20 to 25 mph will be
possible during the afternoon. A few isolated showers and
thunderstorms cannot be ruled out this afternoon. However, chances
of wetting rains are forecast to be near zero. Cloud to ground
lightning may be frequent with any developing thunderstorms. Strong
gusty outflow winds can be expected nearby developing showers or
thunderstorms. Min RH and chances for precipitation are forecast to
decrease through the end of the week into the weekend.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TODAY...
Sky/weather.........Sunny (5-15 percent). Slight chance of showers
and thunderstorms in the afternoon.
Chance of pcpn......20 percent.
Chance of thunder...15 percent.
Max temperature.....Around 71.
Min humidity........21 percent.
Wind (20 ft)........Light winds until 0800, then southeast around 7
mph until 0900, then light until 1100, then
south 7 to 11 mph until 1500, then southwest 9
to 11 mph. Gusts up to 21 mph. Gusty and
erratic winds expected near thunderstorms in
the afternoon.
Mixing height.......2000 ft AGL until 1100, then 3500 ft AGL until
1200, then 9000 ft AGL until 1300, then 13500
ft AGL until 1700, then 11500 ft AGL.
Transport winds.....South 13 to 21 mph until 1600, then southwest.
Smoke dispersal.....Poor until 1000. Excellent after 1300.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10 10 5 5 5 10 10 15 15 15 15
Weather cov..... SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH
Chc of pcpn (%).0 0 0 10 10 10 10 20 20 10 10
Chc of thdr (%).0 0 0 0 0 10 10 20 20 10 10
Temp............49 52 55 60 64 68 69 70 71 70 70
RH..............75 71 67 56 46 35 30 25 21 21 21
20 FT wind dir..SE SE SE SE SE S S SW SW SW SW
20 FT wind spd..6 7 6 6 7 8 9 11 9 11 11
20 FT wind gust.10 11 10 10 10 12 14 17 14 17 16
Mix hgt (kft)...0.5 0.5 1.5 2.0 3.5 9.0 12 12 13 14 12
Transp wind dir.SE SE SE S S S S S S SW SW
Transp wind spd.15 14 13 13 14 16 18 21 20 18 18
SDspl kt-ft/10007 7 16 21 44 128 196 218 221 213 188
.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent).
Chance of pcpn......10 percent.
Chance of thunder...5 percent.
Min temperature.....Around 48.
Max humidity........44 percent.
Wind (20 ft)........Southwest winds 7 to 10 mph with gusts to
around 14 mph until 2100, then light.
Mixing height.......8500 ft AGL until 2000, then 500 ft AGL.
Transport winds.....West 12 to 18 mph until 2400. South 8 to 9 mph
after 0300.
Smoke dispersal.....Very good until 2000, then poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........15 10 10 10 10 10 10 15 20 20 25 25
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).10 0 0 0 0 0 0 0 0 0 0 0
Temp............69 65 62 59 56 53 50 50 49 48 48 48
RH..............22 25 29 33 35 38 40 42 43 44 43 41
20 FT wind dir..SW SW W W W W W W W SW SW SW
20 FT wind spd..10 9 7 6 6 6 6 6 5 4 3 4
20 FT wind gust.14 14 12 10 8 8 8 8 6 6 5 6
Mix hgt (kft)...9.0 8.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SW SW W W W W W W SW S S SW
Transp wind spd.17 18 14 13 12 12 12 12 10 9 8 9
SDspl kt-ft/1000137 136 9 6 6 6 6 6 5 5 4 5
.FRIDAY...
Sky/weather.........Mostly sunny (25-35 percent). Slight chance of
showers and thunderstorms in the afternoon.
Chance of pcpn......20 percent.
Chance of thunder...23 percent.
Max temperature.....Around 71.
Min humidity........26 percent.
Wind (20 ft)........Light winds until 1200, then west 8 to 9 mph
with gusts to around 18 mph. Gusty and erratic
winds expected near thunderstorms in the
afternoon.
Mixing height.......500 ft AGL until 0900. 11000 ft AGL after 1200.
Transport winds.....West 9 to 17 mph until 1100, then 20 to 23 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 30 15 15 15 20 25 30 35 40 35 35
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH SCH
Chc of pcpn (%).0 0 0 0 0 0 20 20 20 20 20 20
Chc of thdr (%).0 0 0 0 0 0 20 20 20 20 20 20
Temp............48 49 53 59 64 67 68 69 69 69 69 68
RH..............39 43 43 38 32 28 26 24 24 24 24 25
20 FT wind dir..SW W SW SW SW SW W W W W W W
20 FT wind spd..4 4 4 4 5 6 8 9 9 9 9 9
20 FT wind gust.6 6 7 8 10 13 14 16 17 17 18 18
Mix hgt (kft)...0.5 0.5 0.5 2.5 6.0 8.0 11 11 11 11 10 9.5
Transp wind dir.SW W W W W W W W W W W W
Transp wind spd.9 9 9 12 17 20 22 22 23 23 23 22
SDspl kt-ft/10005 4 5 24 92 139 195 198 212 216 201 177
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Partly cloudy. Chance of showers and thunderstorms. Lows in the
upper 40s. Highs in the lower 70s. Light winds.
.SUNDAY...
Mostly clear. Lows in the mid 40s. Highs around 70. West winds
around 7 mph.
.MONDAY...
Mostly clear. Lows in the mid 40s. Highs in the mid 70s. South
winds around 7 mph.
$$
Forecaster...Dziewaltowski
Requested by...Aaron Baechle
Type of request...WILDFIRE
.TAG 2518772.2/RIW
.DELDT 07/31/25
.FormatterVersion 2.0.0
.EMAIL aaronbaechle@gmail.com