014
FNUS75 KRIW 060248
FWSRIW
SPOT FORECAST FOR BARE FIRE...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
848 PM MDT WED AUG 5 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON AUGUST 06.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
SKIES WILL REMAIN MOSTLY CLEAR FOR THE NEXT SEVERAL DAYS. SMOKE
FROM WILDFIRES TO THE WEST WILL CONTINUE TO FILTER INTO THE AREA
REDUCING VISIBILITY. DIURNALLY DRIVEN LIGHT WIND WILL OCCUR
THURSDAY MORNING. DIRECTION WILL BE HIGHLY DEPENDENT ON THE SIDE
OF THE FIRE YOU ARE ON DUE TO THE TERRAIN. WIND WILL TRANSITION TO
THE SYNOPTIC FLOW FROM THE WEST/NORTHWEST BETWEEN 0900 AND 1000
THURSDAY MORNING AND INCREASE TO AROUND 15 MPH, WITH GUSTS AROUND
25 MPH UNTIL 2000. OVERALL, WEATHER CONDITIONS WILL REMAIN
CONSISTENT THROUGH THIS WEEK WITH WIND GUSTS AROUND 25 MPH EACH
AFTERNOON AND WIND REMAINING FROM THE WEST/NORTHWEST. SMOKE
DISPERSAL WILL BECOME EXCELLENT AFTER NOON. TEMPERATURES WILL BE
ABOUT 5 DEGREES WARMER THURSDAY AFTERNOON COMPARED TO WEDNESDAY.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
THURSDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT). AREAS OF SMOKE EARLY IN
THE MORNING, THEN PATCHY SMOKE LATE IN THE
MORNING. AREAS OF SMOKE IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1000, THEN WEST/NORTHWEST
10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1200, THEN AROUND
20 MPH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1000. 9000 FT AGL AFTER 1400.
TRANSPORT WINDS.....WEST 12 TO 21 MPH UNTIL 1500, THEN NORTHWEST
21 TO 22 MPH.
SMOKE DISPERSAL.....POOR UNTIL 0900 THEN INCREASING THROUGH THE MORNING
BECOMING EXCELLENT IN THE AFTERNOON AFTER 1200.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........10 15 15 5 5 5 0 5 10 5 5 5
WEATHER COV.....ARS ARS ARS ARS PTY PTY ARS ARS ARS ARS ARS ARS
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
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............46 51 55 60 64 67 71 72 74 75 75 76
RH..............35 30 26 21 19 17 15 15 15 15 16 16
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..6 6 5 6 9 10 11 12 11 13 12 11
20 FT WIND GUST.10 8 7 10 13 16 18 18 18 18 18 18
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..10 10 10 15 15 15 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 0.5 2.0 4.0 5.5 6.5 8.0 8.5 9.0 9.0 9.0
TRANSP WIND DIR.W W W W W W W W W NW W W
TRANSP WIND SPD.12 12 12 14 17 20 21 21 21 22 22 21
SDSPL KT-FT/10006 6 6 23 59 91 118 140 151 173 169 163
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). AREAS OF SMOKE
EARLY IN THE EVENING, THEN PATCHY SMOKE IN THE
LATE EVENING AND OVERNIGHT.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........29 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO
AROUND 18 MPH UNTIL 2100, THEN LIGHT.
RIDGETOP WIND.......NORTHWEST 15 TO 20 MPH UNTIL 2100, THEN WEST 10
TO 15 MPH.
MIXING HEIGHT.......9000 FT AGL UNTIL 1900. 500 FT AGL AFTER 2000.
TRANSPORT WINDS.....WEST 12 TO 20 MPH.
SMOKE DISPERSAL.....VERY GOOD UNTIL 1900. POOR AFTER 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 5 10 5 5 10 5 10 15 10 15 15
WEATHER COV.....ARS ARS ARS PTY PTY PTY PTY PTY PTY PTY PTY PTY
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
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............76 74 70 65 62 60 59 58 57 56 55 54
RH..............17 16 19 22 24 25 26 27 26 27 28 28
20 FT WIND DIR..NW NW NW W W W W W W W W W
20 FT WIND SPD..11 9 7 6 6 6 6 6 6 6 6 5
20 FT WIND GUST.17 14 11 10 8 8 10 10 10 8 8 8
RIDGE WIND DIR..NW NW NW W W W W W W W W W
RIDGE WIND SPD..20 15 15 10 10 10 15 10 10 10 10 10
MIX HGT (KFT)...9.0 6.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W NW NW W W W W W W W W
TRANSP WIND SPD.20 16 14 12 12 12 13 12 12 12 13 13
SDSPL KT-FT/1000149 81 9 6 6 6 6 6 6 6 6 6
FRIDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........13 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1100, THEN WEST 8 TO 12 MPH
WITH GUSTS TO AROUND 23 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1000. 13000 FT AGL AFTER
1500.
TRANSPORT WINDS.....WEST 10 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 (%).........15 20 15 5 5 5 5 10 15 20 15 10
WEATHER COV.....PTY
WEATHER TYPE....SMK
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............54 53 56 62 66 71 74 76 78 78 79 80
RH..............29 30 30 29 26 21 17 15 14 14 13 12
20 FT WIND DIR..W SW W W W W W W W W W NW
20 FT WIND SPD..6 5 4 3 5 8 11 12 12 12 12 12
20 FT WIND GUST.10 8 6 6 10 16 20 22 23 23 23 23
RIDGE WIND DIR..W SW W W W W W W W W W NW
RIDGE WIND SPD..10 10 10 10 10 15 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 1.5 2.0 5.0 7.5 11 12 12 13 13 12
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.12 10 13 14 17 20 23 23 22 22 22 21
SDSPL KT-FT/10006 5 14 24 73 131 212 226 229 243 233 212
FORECAST DAYS 3 THROUGH 5
SATURDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. WEST
WINDS AROUND 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. WEST
WINDS AROUND 8 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. WEST
WINDS AROUND 7 MPH.
FORECASTER...ROWE
REQUESTED BY...JUAN IC-4
TYPE OF REQUEST...WILDFIRE
.TAG 2619057.0/RIW
.DELDT 08/05/26
.FORMATTERVERSION 2.0.0
.EMAIL JUAN.QUIROGA@USDA.GOV
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