509
FNUS75 KRIW 011623
FWSRIW
SPOT FORECAST FOR RIVER BEND CONTROL BURN...POWDER RIVER FIRE DISTRICT
NATIONAL WEATHER SERVICE RIVERTON WY
923 AM MST SUN FEB 1 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 MST ON FEBRUARY 01.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
SKIES REMAIN PARTLY CLOUDY TODAY, MAINLY JUST HIGH CIRRUS THROUGH
THE AFTERNOON. NO PRECIPITATION IS EXPECTED. WINDS WILL REMAIN
LIGHT FROM THE SOUTHWEST THROUGH 1200, WITH SOME INCREASING GUSTS
10 TO 15 MPH IN THE AFTERNOON. MODEST WINDS AND LOW MIXING HEIGHTS
WILL BRING POOR TO FAIR SMOKE DISPERSAL. HUMIDITY LEVELS WILL
DECREASE TO AROUND 25 PERCENT.
WINDS WILL DECREASE OVERNIGHT, REMAINING LIGHT FROM THE WEST
UNDER 5 MPH. HIGH CIRRUS CONTINUES THROUGH THE NIGHT, WITH NO
PRECIPITATION EXPECTED.
WINDS REMAIN LIGHT FROM THE WEST MONDAY MORNING, BEFORE TURNING
MORE FORM THE NORTHWEST AND INCREASING TO AROUND 10 MPH, WITH
OCCASIONAL GUSTS AROUND 15 MPH. HIGHER MIXING HEIGHTS ALONG WITH
MODEST NORTHWEST WINDS WILL LEAD TO VERY GOOD SMOKE DISPERSAL
DURING THE AFTERNOON. SLIGHTLY COOLER TEMPERATURES WILL KEEP
LOWEST HUMIDITY LEVELS AROUND 30 PERCENT IN THE AFTERNOON.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1200, THEN SOUTHWEST 7 TO 9
MPH WITH GUSTS TO AROUND 14 MPH.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1200, THEN 3000 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 17 MPH UNTIL 1400, THEN 13 TO 21
MPH.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR.
TIME (MST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 65 65 60 50 55 55 50
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0
TEMP............48 52 54 56 58 58 56 53
RH..............34 32 30 27 25 25 26 31
20 FT WIND DIR..SW SW SW SW W W W W
20 FT WIND SPD..4 5 7 9 9 8 7 6
20 FT WIND GUST.7 10 13 14 14 14 12 10
RIDGE WIND DIR..SW SW SW SW W W W W
RIDGE WIND SPD..10 10 15 15 15 15 15 10
MIX HGT (KFT)...0.5 2.0 2.5 3.0 2.5 2.5 1.5 0.5
TRANSP WIND DIR.W W W W W W W W
TRANSP WIND SPD.10 13 15 17 21 18 15 13
SDSPL KT-FT/10006 21 33 42 49 39 19 6
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........60 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......WEST AROUND 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 15 MPH UNTIL 0500, THEN NORTH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 60 55 60 60 55 55 65 70 70 65 75
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 46 45 44 43 42 42 43 42 41 39 39
RH..............35 35 35 35 36 37 36 36 39 39 42 53
20 FT WIND DIR..W W SW W W W W W W W W NW
20 FT WIND SPD..5 5 5 5 5 4 4 3 3 3 3 3
20 FT WIND GUST.8 8 10 10 8 7 6 6 6 6 6 4
RIDGE WIND DIR..W W SW W W W W W W W W NW
RIDGE WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...0.5 0.5 0.5 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 SW W W W W W NW N
TRANSP WIND SPD.12 12 12 13 14 15 14 12 12 10 8 10
SDSPL KT-FT/10005 6 6 7 7 8 8 6 7 6 5 5
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 51.
MIN HUMIDITY........29 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1300, THEN NORTHWEST 7 TO 10
MPH.
RIDGETOP WIND.......NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1100, THEN 5000 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 17 MPH UNTIL 1200, THEN NORTHWEST 20
TO 25 MPH UNTIL 1600, THEN 12 TO 15 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, INCREASING TO VERY GOOD.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........75 50 40 35 30 20 15 15 10 10 10 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 37 36 40 45 49 50 50 51 49 47 45
RH..............55 57 60 54 46 38 33 30 29 30 33 37
20 FT WIND DIR..W W W W W W W NW NW NW NW NW
20 FT WIND SPD..3 3 3 3 4 5 6 7 8 7 6 6
20 FT WIND GUST.4 4 4 4 6 6 10 10 12 10 10 7
RIDGE WIND DIR..W W W W W W W NW NW NW NW NW
RIDGE WIND SPD..10 10 10 10 10 10 15 15 15 15 15 10
MIX HGT (KFT)...0.5 0.5 0.5 0.5 2.0 3.5 5.0 5.0 5.0 3.5 2.0 1.0
TRANSP WIND DIR.NW W W W W NW NW NW NW NW NW NW
TRANSP WIND SPD.12 12 9 8 12 17 22 24 25 20 15 12
SDSPL KT-FT/10006 6 5 5 21 55 94 105 112 62 29 8
FORECAST DAYS 3 THROUGH 5
TUESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 40S.
LIGHT WINDS.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE MID 50S. LIGHT
WINDS.
THURSDAY
PARTLY CLOUDY. LOWS AROUND 30. HIGHS AROUND 60. LIGHT WINDS.
FORECASTER...STRAUB
REQUESTED BY...ANITA BARTLETT
TYPE OF REQUEST...PRESCRIBED
.TAG 2601463.0/RIW
.DELDT 02/01/26
.FORMATTERVERSION 2.0.0
.EMAIL PRFD@RTCONNECT.NET
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page