699
FNUS75 KRIW 300024
FWSRIW
SPOT FORECAST FOR VEES...WY-WBD
NATIONAL WEATHER SERVICE RIVERTON WY
624 PM MDT TUE JUL 29 2025
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON JULY 30.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
THE PATTERN FOR THE NEXT SEVERAL DAYS COULD BE CHARACTERIZED AS ONE
OF A TYPICAL SUMMER - MORNING SUN FOLLOWED BY INCREASING CLOUDS AND
SCATTERED LATE DAY SHOWERS AND THUNDERSTORMS. AFTER A MOSTLY SUNNY
WEDNESDAY MORNING, SCATTERED SHOWERS AND A FEW THUNDERSTORMS DEVELOP
LATE IN THE AFTERNOON AND MOVE EAST ACROSS THE BIGHORN BASIN. THE
BEST CHANCE FOR THESE TO CROSS THE FIRE SITE WILL BE FROM 1600 TO
2000 WEDNESDAY. CLOUD COVER MAY BE A BIT SLOW TO ERODE WEDNESDAY
NIGHT, SO OVERNIGHT LOWS ARE LIKELY TO BE SLIGHTLY WARMER. THURSDAY
IS MUCH THE SAME WITH THE BEST CHANCE FOR SHOWERS AND STORMS
COMING LATE IN THE AFTERNOON INTO THE EARLY EVENING HOURS.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THROUGH 1300, THEN
BECOMING MOSTLY CLOUDY (50-70 PERCENT) BY 1700.
A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER 1600.
CWR.................0 PERCENT UNTIL 1500, THEN 25 PERCENT BY 1700.
CHANCE OF PCPN......LESS THAN 10 PERCENT UNTIL 1300, THEN INCREASING
TO 50 PERCENT BY 1700.
CHANCE OF THUNDER...LESS THAN 10 PERCENT UNTIL 1500, THEN INCREASING
TO 30 PERCENT BY 1700.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........34-37 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY WIND 4 TO 7 MPH UNTIL 1100,
THEN BECOMING EAST 7 TO 12 MPH BETWEEN 1200 AND
1400. OCCASIONAL LATE AFTERNOON GUSTS AROUND
18 MPH. GUSTY AND ERRATIC WIND EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......SOUTHEAST AROUND 10 MPH UNTIL 1100, THEN
BECOMING EAST AROUND 15 MPH BETWEEN 1200 AND 1400.
MIXING HEIGHT.......LESS THAN 1500 FT AGL UNTIL 0900, THEN GRADUALLY
INCREASING TO AROUND 6500 FT AGL BY 1500.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 5 TO 8 MPH UNTIL 1000, THEN
BECOMING EAST TO SOUTHEAST 12 TO 17 MPH BY 1300.
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN GRADUALLY BECOMING GOOD
BY 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........10 10 10 15 15 10 15 10 15 15 35 50
WEATHER COV..... CHC CHC
WEATHER TYPE.... RW RW
TSTM COV........ CHC CHC
CWR.............0 0 0 0 0 0 0 0 0 0 10 25
CHC OF PCPN (%).0 0 0 0 0 0 5 10 10 20 30 50
CHC OF THDR (%).0 0 0 0 0 0 0 0 10 10 20 30
TEMP............59 61 63 66 69 71 74 76 78 78 77 76
RH..............73 71 65 60 54 49 46 43 40 37 38 42
20 FT WIND DIR..SE E S SW S S S SE E E E E
20 FT WIND SPD..5 3 3 5 5 5 5 8 11 12 10 11
20 FT WIND GUST.7 5 5 7 7 7 7 13 17 18 16 17
RIDGE WIND DIR..SE E S SW S S S SE E E E E
RIDGE WIND SPD..10 10 10 10 10 10 10 15 20 20 15 20
MIX HGT (KFT)...0.5 0.5 1.5 2.0 3.0 4.0 5.5 6.0 6.5 6.5 6.0 4.5
TRANSP WIND DIR.SE E E SE SE SE SE SE SE E E E
TRANSP WIND SPD.10 8 8 10 10 10 10 14 18 20 17 18
SDSPL KT-FT/10008 6 12 21 30 37 48 80 90 95 96 90
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) WITH A CHANCE
OF SHOWERS AND THUNDERSTORMS UNTIL 2100.
BECOMING PARTLY CLOUDY (30-50 PERCENT) AFTER 0200.
CWR.................30 PERCENT UNTIL 2100, THEN DECREASING TO LESS
THAN 5 PERCENT.
CHANCE OF PCPN......50 PERCENT UNTIL 2000, THEN GRADUALLY DECREASING
TO LESS THAN 10 PERCENT BY 2300.
CHANCE OF THUNDER...30 PERCENT UNTIL 2000, THEN DECREASING TO LESS
THAN 5 PERCENT BY 2200.
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........68-71 PERCENT.
WIND (20 FT)........EAST TO SOUTHEAST WIND 7 TO 11 MPH WITH GUSTS TO
AROUND 16 MPH UNTIL 0200, THEN DECREASING TO
5 TO 8 MPH. GUSTY AND ERRATIC WIND EXPECTED NEAR
THUNDERSTORMS.
RIDGETOP WIND.......EAST TO SOUTHEAST 12 TO 17 MPH.
MIXING HEIGHT.......AROUND 6000 FT AGL UNTIL 1900, THEN GRADUALLY
DECREASING TO LESS THAN 1500 FT AGL BY 2300.
TRANSPORT WINDS.....EAST TO SOUTHEAST 14 TO 20 MPH UNTIL 2300, THEN
DECREASING TO 8 TO 13 MPH BY 0200.
SMOKE DISPERSAL.....GOOD UNTIL 1900, THEN BECOMING POOR BY 2200.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 60 75 80 80 80 80 70 65 60 55 45
WEATHER COV.....CHC CHC CHC CHC ISO ISO
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........CHC CHC CHC ISO
CWR.............30 30 30 10 10 5 0 0 0 0 0 0
CHC OF PCPN (%).50 50 50 30 20 10 10 10 10 5 5 0
CHC OF THDR (%).30 30 30 10 10 0 0 0 0 0 0 0
TEMP............72 70 69 67 67 66 66 65 64 63 61 60
RH..............47 50 50 56 59 60 60 63 66 69 70 71
20 FT WIND DIR..SE E E E E SE SE SE E E E E
20 FT WIND SPD..10 11 11 11 11 10 9 8 8 7 6 6
20 FT WIND GUST.16 14 14 16 14 14 12 11 10 8 7 7
RIDGE WIND DIR..SE E E E E SE SE SE E E E E
RIDGE WIND SPD..15 20 20 20 20 15 15 15 15 15 15 15
MIX HGT (KFT)...2.5 1.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5
TRANSP WIND DIR.E E E E SE SE SE SE E E E E
TRANSP WIND SPD.24 20 18 18 18 17 16 15 15 14 13 13
SDSPL KT-FT/100054 26 19 15 15 15 15 13 12 10 9 9
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT) UNTIL 1400,
THEN GRADUALLY BECOMING MOSTLY CLOUDY
(50-60 PERCENT) BY 1700. A CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER 1600.
CWR.................0 PERCENT UNTIL 1400, THEN INCREASING TO
20 PERCENT AFTER 1600.
CHANCE OF PCPN......LESS THAN 5 PERCENT UNTIL 1400, THEN
INCREASING TO 40 PERCENT AFTER 1600.
CHANCE OF THUNDER...0 PERCENT UNTIL 1400, THEN INCREASING
TO 25 PERCENT AFTER 1600.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........31-34 PERCENT.
WIND (20 FT)........EAST 4 TO 7 MPH UNTIL 1200, THEN BECOMING
SOUTHEAST 8 TO 12 MPH. GUSTY AND ERRATIC WIND
EXPECTED NEAR THUNDERSTORMS.
RIDGETOP WIND.......EAST TO SOUTHEAST 10 TO 15 MPH.
MIXING HEIGHT.......LESS THAN 1500 FT AGL UNTIL 1000, THEN
GRADUALLY INCREASING TO AROUND 6000 FT AGL
BY 1400.
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN GRADUALLY BECOMING
GOOD BY 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........40 35 35 30 35 35 35 35 30 30 35 40
WEATHER COV..... ISO ISO CHC CHC
WEATHER TYPE.... RW RW RW RW
TSTM COV........ ISO ISO CHC
CWR.............0 0 0 0 0 0 0 0 0 5 20 20
CHC OF PCPN (%).0 0 0 0 0 0 0 0 10 20 30 40
CHC OF THDR (%).0 0 0 0 0 0 0 0 10 10 20 20
TEMP............60 62 65 68 71 73 76 79 81 82 82 82
RH..............69 66 62 57 52 47 43 39 35 33 32 32
20 FT WIND DIR..E E SE SE SE SE SE SE SE SE SE E
20 FT WIND SPD..6 6 6 6 6 6 6 6 7 7 8 8
20 FT WIND GUST.7 7 7 7 8 8 10 10 11 12 13 14
RIDGE WIND DIR..E E SE SE SE SE SE SE SE SE SE E
RIDGE WIND SPD..10 10 10 10 10 15 15 15 15 15 15 15
MIX HGT (KFT)...0.5 1.0 1.5 1.5 2.5 3.0 4.0 4.5 5.5 6.5 5.0 4.0
TRANSP WIND DIR.E E SE SE SE SE SE SE SE SE SE E
TRANSP WIND SPD.12 12 12 12 12 13 13 13 14 14 15 17
SDSPL KT-FT/10008 11 14 17 25 36 45 54 69 79 70 63
FORECAST DAYS 3 THROUGH 5
THURSDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL
2100, THEN DECREASING CLOUDS. LOWS AROUND 60. EAST WIND
5 TO 10 MPH.
FRIDAY
MOSTLY SUNNY DURING THE MORNING. INCREASING CLOUDS LATE IN
THE DAY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL SUNSET.
HIGHS IN THE MID 80S. LOWS AROUND 60. SOUTHEAST WIND 5 TO 10 MPH.
SATURDAY
MOSTLY SUNNY DURING THE MORNING, THEN INCREASING CLOUDS WITH A
CHANCE OF SHOWERS AND A FEW THUNDERSTORMS UNTIL SUNSET. HIGHS
IN THE MID 80S. LOWS AROUND 60. WIND LIKELY TO FOLLOW A DIURNAL
UPSLOPE/DOWNSLOPE PATTERN.
SUNDAY
MOSTLY SUNNY DURING THE MORNING, THEN INCREASING CLOUDS WITH A
CHANCE OF SHOWERS AND A FEW THUNDERSTORMS UNTIL SUNSET. HIGHS
IN THE LOWER 80S. LOWS IN THE UPPER 50S. WIND LIKELY TO FOLLOW
A DIURNAL UPSLOPE/DOWNSLOPE PATTERN.
FORECASTER...CNJ
REQUESTED BY...MIKE ORTNER
TYPE OF REQUEST...WILDFIRE
.TAG 2518773.1/RIW
.DELDT 07/29/25
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL.ORTNER@USDA.GOV
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