922
FNUS75 KRIW 071736
FWSRIW
SPOT FORECAST FOR SLOUGH SOUTH RX...NPS
NATIONAL WEATHER SERVICE RIVERTON WY
1136 AM MDT TUE APR 7 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 MDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
WINDS THURSDAY WILL BE FROM THE WEST DURING THE DAY, WITH GUSTS
HOLDING AT OR BELOW 10 MPH. HUMIDITY LEVELS FALL BELOW 30 PERCENT
DURING THE AFTERNOON. SKIES REMAIN SUNNY, WITH NO PRECIPITATION
EXPECTED. ELEVATED MIXING HEIGHTS WILL ALLOW FOR VERY GOOD SMOKE
DISPERSAL DURING THE AFTERNOON.
WINDS WILL REMAIN LIGHT OVERNIGHT BELOW 5 MPH. HUMIDITY RECOVERY
IS GOOD, REACHING NEAR 70 PERCENT.
FRIDAY WILL SEE INCREASING CLOUDS WITH A CHANCE FOR SHOWERS AND
POSSIBLY A THUNDERSTORMS. ANY PRECIPITATION WILL BE LIGHT, WITH
MINIMAL TO NO ACCUMULATION. WINDS WILL BE MORE FROM THE SOUTHWEST
OVER THE BUTTE, BUT ARE EXPECTED TO REMAIN BELOW 10 MPH. SMOKE
DISPERSAL WILL AGAIN BE VERY GOOD TO EXCELLENT IN THE AFTERNOON.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........23 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1200. WINDS WEST AROUND 7 MPH
WITH GUSTS 10 TO 12 MPH AFTER 1400.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH UNTIL 1700, THEN WEST.
MIXING HEIGHT.......2500 FT AGL UNTIL 1000, THEN 8500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 18 MPH UNTIL 1400, THEN WEST 15
TO 20 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000. VERY GOOD AFTER 1200.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 20 20 15 10 10 10 10 10 10 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0
TEMP............34 37 40 44 48 52 55 56 58 59 60
RH..............55 52 47 42 37 32 29 26 25 23 23
20 FT WIND DIR..S S SW SW SW W W W W W W
20 FT WIND SPD..5 4 4 4 5 6 6 7 7 7 7
20 FT WIND GUST.6 6 6 6 8 10 11 12 12 12 12
RIDGE WIND DIR..S S SW SW SW W W W W W W
RIDGE WIND SPD..10 10 10 10 10 10 15 15 15 15 15
MIX HGT (KFT)...2.0 2.0 2.5 4.0 6.0 7.5 8.0 8.0 8.5 8.0 8.0
TRANSP WIND DIR.SW SW SW W W W W W W W W
TRANSP WIND SPD.10 10 9 13 15 18 18 20 20 17 15
SDSPL KT-FT/100016 20 21 46 75 118 124 139 145 124 103
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 33.
MAX HUMIDITY........66 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 2000, THEN SOUTHEAST
UNTIL 0200, THEN EAST.
MIXING HEIGHT.......7500 FT AGL UNTIL 1900. 1500 FT AGL AFTER 2100.
TRANSPORT WINDS.....SOUTHWEST 9 TO 13 MPH UNTIL 2100. SOUTHEAST 10
TO 12 MPH AFTER 0100.
SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2100.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 10 15 15 15 20 25 35 45 50 50 45
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............59 56 51 47 44 43 41 39 38 36 35 34
RH..............24 29 36 42 45 48 50 54 58 61 64 66
20 FT WIND DIR..W SW S SE SE E E E E E E E
20 FT WIND SPD..6 6 4 3 3 4 5 5 5 5 5 6
20 FT WIND GUST.11 10 7 6 6 6 7 7 7 7 7 8
RIDGE WIND DIR..W SW S SE SE E E E E E E E
RIDGE WIND SPD..15 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...7.5 5.5 3.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
TRANSP WIND DIR.W W SW S S S SE SE SE E E SE
TRANSP WIND SPD.13 12 9 8 8 9 10 10 10 10 10 12
SDSPL KT-FT/100084 55 28 9 9 11 12 12 12 12 12 13
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...11 PERCENT.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTS UP TO 14 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
THE AFTERNOON.
RIDGETOP WIND.......EAST AROUND 10 MPH UNTIL 1100, THEN SOUTH.
MIXING HEIGHT.......2500 FT AGL UNTIL 1100, THEN 8000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 10 TO 12 MPH UNTIL 1100, THEN
15 TO 24 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1200, INCREASING TO EXCELLENT IN
THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........45 50 55 60 60 55 55 60 60 65 65 70
WEATHER COV..... CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH
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 10 10 10 10 10 10
TEMP............34 35 38 41 46 51 55 59 61 62 62 62
RH..............66 64 60 55 50 44 39 35 32 31 30 31
20 FT WIND DIR..E E E E SE S S S SW SW S S
20 FT WIND SPD..6 6 5 5 5 5 5 5 6 6 6 6
20 FT WIND GUST.8 8 8 8 10 10 10 11 11 11 11 11
RIDGE WIND DIR..E E E E SE S S S SW SW S S
RIDGE WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...1.5 1.5 2.0 2.0 2.5 3.5 4.0 5.5 7.0 8.0 7.0 6.0
TRANSP WIND DIR.SE SE SE SE SE S S SW SW SW SW W
TRANSP WIND SPD.12 12 10 10 10 12 14 17 21 24 20 15
SDSPL KT-FT/100013 16 16 18 25 34 50 82 123 171 122 80
FORECAST DAYS 3 THROUGH 5
SATURDAY
MOSTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS.
LOWS IN THE UPPER 30S. HIGHS AROUND 60. SOUTH WINDS AROUND 9 MPH.
SUNDAY
SHOWERS, SLIGHT CHANCE OF THUNDERSTORMS AND SNOW SHOWERS. LOWS IN
THE MID 30S. HIGHS IN THE LOWER 50S. SOUTH WINDS AROUND 9 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS AND SNOW SHOWERS LIKELY. LOWS AROUND 30.
HIGHS IN THE MID 40S. SOUTHWEST WINDS AROUND 8 MPH.
FORECASTER...STRAUB
REQUESTED BY...PAUL HOOD
TYPE OF REQUEST...PRESCRIBED
.TAG 2609379.0/RIW
.DELDT 04/07/26
.FORMATTERVERSION 2.0.0
.EMAIL PAUL_HOOD@NPS.GOV
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