311
FNUS75 KRIW 201322
FWSRIW
SPOT FORECAST FOR SALT PASS RX...USFS-BTF-WZ
NATIONAL WEATHER SERVICE RIVERTON WY
622 AM MST THU NOV 20 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON NOVEMBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
PATCHY FOG THIS MORNING THAT WILL BURN OFF BY MID TO LATE MORNING
BETWEEN 10-11AM. OTHERWISE, PARTLY CLOUDY SKIES THERE AFTER WITH
VERY MINIMAL CHANCES FOR PRECIPITATION (~10%) IN THE AFTERNOON.
LIGHT WINDS LESS THAN 10 MPH WITH MINIMUM RELATIVE HUMIDITY VALUES
ONCE AGAIN AROUND THE 70 PERCENT MARK WITH TEMPERATURES IN THE
LOW 40S. SMOKE DISPERSAL POOR WITH THE WEAK WINDS.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). PATCHY FOG EARLY
IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS
EARLY IN THE AFTERNOON. SLIGHT CHANCE OF SNOW
SHOWERS EARLY IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 42.
MIN HUMIDITY........67 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......SOUTHEAST AROUND 10 MPH UNTIL 1000, THEN LIGHT
UNTIL 1300, THEN NORTH AROUND 10 MPH UNTIL
1600, THEN LIGHT.
MIXING HEIGHT.......3000 FT AGL UNTIL 1300, THEN 3500 FT AGL UNTIL
1600, THEN 1500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 7 TO 8 MPH UNTIL 1100, THEN LIGHT
UNTIL 1300, THEN NORTHEAST AROUND 8 MPH UNTIL
1600, THEN AROUND 7 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........45 45 45 45 50 50 55 55 55 55
WEATHER COV.....PTY SCH SCH SCH
WEATHER TYPE....FOG RW RS RS
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 20 20 20 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............32 35 37 40 41 41 42 40 38 36
RH..............92 85 82 73 73 67 70 79 85 89
20 FT WIND DIR..SE SE SE W NW NW N N N N
20 FT WIND SPD..3 3 2 2 3 4 4 4 3 2
20 FT WIND GUST.5 4 5 6 6 6 4
RIDGE WIND DIR..SE SE SE E NE N N N N N
RIDGE WIND SPD..10 10 5 5 5 10 10 10 5 5
MIX HGT (KFT)...1.5 1.5 2.0 3.0 3.0 3.5 3.0 2.5 1.5 1.5
TRANSP WIND DIR.SE SE SE SE E E NE NE N NE
TRANSP WIND SPD.8 8 7 6 6 8 8 8 7 7
SDSPL KT-FT/10009 11 13 15 16 23 20 17 9 8
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS AND SNOW SHOWERS AFTER 3 AM.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 27.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS UNTIL 2100, THEN NORTHEAST AROUND
10 MPH UNTIL 2200, THEN LIGHT UNTIL 2300, THEN
NORTHEAST AROUND 10 MPH UNTIL 2400, THEN LIGHT
UNTIL 0200, THEN NORTH AROUND 10 MPH UNTIL
0400, THEN LIGHT.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 7 MPH UNTIL 2000. NORTH 7 TO 8
MPH AFTER 0200.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 50 50 55 55 55 55 55 55 60 65 70
WEATHER COV..... SCH SCH
WEATHER TYPE.... RS RS
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............35 34 33 33 32 32 32 31 31 30 29 28
RH..............82 82 82 82 82 82 82 82 83 83 84 85
20 FT WIND DIR..NE NE NE NE NE NE NE N N N N N
20 FT WIND SPD..2 2 2 3 2 3 2 2 3 3 2 2
20 FT WIND GUST. 4 4 4 4 4 4 4 4 4 5
RIDGE WIND DIR..NE NE NE NE NE NE NE N N N N N
RIDGE WIND SPD..5 5 5 10 5 10 5 5 10 10 5 5
MIX HGT (KFT)...1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
TRANSP WIND DIR.N NE E E E NE NE NE N N N N
TRANSP WIND SPD.7 7 7 8 7 8 7 7 8 8 7 7
SDSPL KT-FT/10007 7 8 9 8 9 8 8 9 9 8 8
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS IN THE MORNING. SLIGHT CHANCE OF
RAIN SHOWERS LATE IN THE MORNING.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 43.
MIN HUMIDITY........71 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS UNTIL 1000, THEN NORTHWEST AROUND
10 MPH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTH 7 TO 10 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........65 60 60 45 45 50 50 50 45 40 40 35
WEATHER COV.....SCH SCH SCH SCH SCH
WEATHER TYPE....SW SW SW SW RS
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).20 20 20 20 20 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............27 27 28 33 37 40 42 42 42 41 39 37
RH..............87 90 86 85 81 76 73 71 72 77 83 88
20 FT WIND DIR..N N NE N NW NW NW NW NW NW NW NW
20 FT WIND SPD..2 2 2 2 3 3 4 5 5 5 4 4
20 FT WIND GUST.5 5 5 5 6 6 7 8 10 10 10 8
RIDGE WIND DIR..N N NE N NW NW NW NW NW NW NW NW
RIDGE WIND SPD..5 5 5 5 10 10 10 10 10 10 10 10
MIX HGT (KFT)...1.0 1.0 1.0 1.5 2.0 2.5 2.5 2.5 2.5 2.5 2.0 1.5
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.7 7 7 7 8 8 9 10 10 10 9 9
SDSPL KT-FT/10007 7 7 9 14 17 20 24 25 20 14 11
FORECAST DAYS 3 THROUGH 5
SATURDAY
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S. LIGHT
WINDS.
SUNDAY
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE MID 40S. LIGHT
WINDS.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE MID 20S.
HIGHS IN THE LOWER 40S. LIGHT WINDS.
FORECASTER...LOWE
REQUESTED BY...MICHAEL MCEWEN
TYPE OF REQUEST...PRESCRIBED
.TAG 2526155.2/RIW
.DELDT 11/20/25
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL.MCEWEN@USDA.GOV
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