Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
994
FNUS75 KRIW 281243
FWSRIW
Spot Forecast for Rand Creek...USFS
National Weather Service Riverton WY
643 AM MDT Mon Sep 28 2026
Forecast is based on forecast start time of 0700 MDT on September 28.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Showers and thunderstorms are expected off and on through the day.
This will lead to a decent chance of a wetting rain (around 30
percent) or around a tenth of an inch though accumulations will
vary over short distances. Wind will generally be out of the west
through the morning, becoming more northerly after 1200. However,
any storms in the area will lead to gusty and erratic outflows.
Otherwise, humidity will remain elevated due to the moisture. Showers
will decrease after sunset, coming to an end by midnight with
clearing skies overnight. Warmer and drier conditions expected
Tuesday.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TODAY...
Sky/weather.........Mostly cloudy (80-90 percent) then becoming
partly sunny (55-65 percent). Chance of rain
showers through the day. Chance of
thunderstorms in the afternoon.
CWR.................5 percent increasing to 20 percent in the
afternoon.
Chance of pcpn......50 percent.
Chance of thunder...29 percent.
Max temperature.....Around 54.
Min humidity........46 percent.
Wind (20 ft)........Light winds until 0900, then west around 7 mph
until 1000, then north around 7 mph. Gusty and
erratic winds expected near thunderstorms in the
afternoon.
Ridgetop wind.......West 10 to 15 mph until 1600, then north.
Mixing height.......1500 ft AGL until 1100, then 4000 ft AGL.
Transport winds.....West 10 to 14 mph.
Smoke dispersal.....Poor until 1100, becoming fair after 1300.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........95 80 80 70 45 45 55 60 75 75 75
Weather cov.....CHC CHC CHC CHC CHC SCH CHC CHC CHC CHC CHC
Weather type....RW RW RW RW RW RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH CHC CHC CHC
CWR.............10 10 10 10 10 20 20 20 20 20 20
Chc of pcpn (%).50 40 30 30 30 20 30 30 40 40 40
Chc of thdr (%).10 10 10 10 10 20 20 20 30 30 30
Temp............44 42 43 46 49 52 53 52 53 51 49
RH..............66 76 76 71 55 50 51 51 53 57 63
20 FT wind dir..SW W W W W NW NW NW NW N N
20 FT wind spd..5 6 7 6 5 5 6 6 6 6 7
20 FT wind gust.7 10 10 7 6 6 7 10 10 10 10
Ridge wind dir..W W W W W NW NW NW NW N N
Ridge wind spd..15 15 15 10 10 10 10 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 1.5 2.5 3.5 3.5 4.0 3.5 3.5 3.0
Transp wind dir.W W W W W W W W W SW W
Transp wind spd.13 13 14 12 10 10 12 13 13 13 14
SDspl kt-ft/10006 6 8 15 23 32 37 44 38 41 38
.TONIGHT...
Sky/weather.........Mostly cloudy (70-80 percent) then becoming
mostly clear (20-30 percent). Chance of rain
showers in the evening. Slight chance of
thunderstorms in the evening.
CWR.................7 percent.
Chance of pcpn......50 percent.
Chance of thunder...22 percent.
Min temperature.....Around 39.
Max humidity........73 percent.
Wind (20 ft)........South winds around 7 mph until 1900, then
light. Gusty and erratic winds expected near
thunderstorms in the evening.
Ridgetop wind.......Southwest 10 to 15 mph until 2400, then west.
Mixing height.......500 ft AGL.
Transport winds.....South around 14 mph until 1900, then east
around 10 mph until 2000, then northwest 9 to
northwest 10 to 13 mph.
Smoke dispersal.....Poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........80 75 80 75 80 70 70 40 40 40 30 10
Weather cov.....CHC CHC CHC CHC SCH SCH
Weather type....RW RW RW RW RW RW
Tstm cov........SCH SCH SCH SCH SCH SCH
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
Chc of pcpn (%).50 50 50 40 20 10 10 0 0 0 0 0
Chc of thdr (%).20 20 20 10 10 10 0 0 0 0 0 0
Temp............48 45 45 44 43 42 42 43 42 41 40 39
RH..............68 75 75 76 76 74 73 68 69 70 70 70
20 FT wind dir..S SW W W W W W W W W W W
20 FT wind spd..7 5 4 5 5 6 6 6 6 6 6 6
20 FT wind gust.10 6 6 6 6 7 8 8 10 10 10 10
Ridge wind dir..S SW W W W W W W W W W W
Ridge wind spd..15 10 10 10 10 10 10 10 15 15 15 15
Mix hgt (kft)...2.0 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.S E N NW W W W W W W W W
Transp wind spd.14 10 9 10 10 12 12 12 13 13 13 13
SDspl kt-ft/100023 7 7 5 5 5 5 5 5 6 6 6
.TUESDAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 58.
Min humidity........28 percent.
Wind (20 ft)........Light winds until 0700, then west 7 to 9 mph.
Gusts up to 18 mph.
Ridgetop wind.......West around 15 mph.
Mixing height.......2000 ft AGL until 1100. 6000 ft AGL after 1300.
Transport winds.....West 13 to 16 mph.
Smoke dispersal.....Poor until 1000, becoming good after 1300.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15 15 10 5 5 5 10 15 20 15 15 10
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............39 39 39 41 46 49 52 55 57 58 58 57
RH..............71 67 69 65 55 45 38 34 30 28 29 30
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..6 7 8 9 7 6 6 6 6 7 7 7
20 FT wind gust.10 11 13 17 14 11 10 10 11 12 12 12
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..15 15 15 15 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 1.0 2.0 3.0 4.0 5.0 5.5 6.0 6.0 5.0
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.13 14 15 16 14 13 13 14 14 14 14 14
SDspl kt-ft/10006 6 6 14 26 35 46 58 67 71 71 59
.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
Mostly clear. Lows in the lower 40s. Highs in the upper 50s. West
winds around 8 mph.
.THURSDAY...
Mostly clear. Lows in the upper 30s. Highs in the upper 50s.
Light winds.
.FRIDAY...
Mostly clear. Lows around 40. Highs in the lower 60s. West winds
around 9 mph.
$$
Forecaster...Hattings
Requested by...Peter Freire
Type of request...WILDFIRE
.TAG 2622568.3/RIW
.DELDT 09/28/26
.FormatterVersion 2.0.0
.EMAIL travis.l.clark@usda.gov,peter.freire@usda.gov