717
FNUS75 KRIW 102114
FWSRIW
SPOT FORECAST FOR SCHOOL SECTION DRAW FIRE...POWDER RIVER FIRE DISTRICT
NATIONAL WEATHER SERVICE RIVERTON WY
314 PM MDT WED SEP 10 2025
FORECAST IS BASED ON FORECAST START TIME OF 1500 MDT ON SEPTEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
A LOW CHANCE (15%) OF AN ISOLATED RAIN SHOWER OR THUNDERSTORM
UNTIL 1900L. A SOUTHWEST WIND OF 10-20 MPH, WITH GUSTS TO 30 MPH
WILL CONTINUE THIS AFTERNOON, BECOMING MORE SOUTHERLY AROUND THE
SAME SPEED BY 2000L. CONDITIONS SHOULD REMAIN DRY TONIGHT THROUGH
THURSDAY MORNING, WITH MORE ISOLATED SHOWERS AND STORMS DEVELOPING
IN THE AREA BY 1500L THURSDAY AFTERNOON. A BREEZY SOUTHWEST WIND
WILL DEVELOP THURSDAY AFTERNOON, ONCE AGAIN.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). ISOLATED SHOWERS
AND THUNDERSTORMS.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...14 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........23 PERCENT.
WIND (20 FT)........THEN SOUTHWEST 10 TO 15 MPH. GUSTS UP TO 25
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
RIDGETOP WIND.......SOUTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......10500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 21 TO 26 MPH.
SMOKE DISPERSAL.....EXCELLENT.
TIME (MDT) 3PM 4PM 5PM
SKY (%).........35 20 20
WEATHER COV.....ISO ISO ISO
WEATHER TYPE....RW RW RW
TSTM COV........ISO ISO ISO
CWR.............0 0 0
CHC OF PCPN (%).20 20 10
CHC OF THDR (%).10 10 10
TEMP............74 74 73
RH..............26 25 25
20 FT WIND DIR..SW SW SW
20 FT WIND SPD..6 8 11
20 FT WIND GUST.12 14 16
RIDGE WIND DIR..SW SW SW
RIDGE WIND SPD..15 20 20
MIX HGT (KFT)...10 11 9.5
TRANSP WIND DIR.SW SW SW
TRANSP WIND SPD.22 23 21
SDSPL KT-FT/1000187 207 169
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) TO MOSTLY
CLOUDY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........45 PERCENT.
WIND (20 FT)........SOUTH WINDS 9 TO 14 MPH WITH GUSTS TO
AROUND 22 MPH.
RIDGETOP WIND.......SOUTH 15 TO 20 MPH.
MIXING HEIGHT.......8000 FT AGL UNTIL 1900.
TRANSPORT WINDS.....SOUTH 16 TO 21 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 (%).........35 55 60 45 40 45 50 50 40 40 40 45
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 0 0 0 0 0 0 10 10 10
CHC OF THDR (%).10 10 10 0 0 0 0 0 0 0 0 0
TEMP............72 69 63 61 59 58 58 58 58 58 57 57
RH..............25 29 32 33 36 38 38 38 37 37 37 39
20 FT WIND DIR..SW SW SW SW SW W SW W SW SW SW SW
20 FT WIND SPD..13 10 10 9 9 9 10 10 10 11 12 14
20 FT WIND GUST.18 16 16 14 14 14 14 14 14 16 18 22
RIDGE WIND DIR..SW SW SW SW SW W SW W SW SW SW SW
RIDGE WIND SPD..20 15 15 15 15 15 15 15 15 20 20 20
MIX HGT (KFT)...8.0 1.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.21 17 17 16 16 16 17 17 17 18 20 22
SDSPL KT-FT/1000145 19 3 2 2 3 3 3 3 3 3 3
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). ISOLATED RAIN
SHOWERS EARLY IN THE MORNING. ISOLATED
THUNDERSTORMS AND SCATTERED RAIN SHOWERS LATE
IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...13 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 14 TO 19 MPH WITH GUSTS TO
AROUND 26 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......SOUTHWEST AROUND 25 MPH.
MIXING HEIGHT.......1500 FT AGL AFTER 0800 UNTIL 1000, THEN INCREASING
TO 10500 FT AGL BY 1500 UNTIL 1600, THEN 8500 FT
AGL.
TRANSPORT WINDS.....SOUTHWEST 22 TO 27 MPH.
SMOKE DISPERSAL.....POOR UNTIL 0900 GRADUALLY INCREASING TO EXCELLENT
BY 1300.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........60 40 20 10 20 25 20 10 20 45 45 35
WEATHER COV.....ISO ISO SCT
WEATHER TYPE....RW RW RW
TSTM COV........ ISO ISO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).20 10 10 10 10 10 0 10 10 10 10 30
CHC OF THDR (%).0 0 0 0 0 0 0 10 10 10 10 10
TEMP............57 56 57 60 64 67 70 71 71 73 72 70
RH..............41 45 45 44 38 33 30 30 27 24 24 25
20 FT WIND DIR..SW W W W W W W SW SW SW SW SW
20 FT WIND SPD..15 15 15 17 17 17 17 17 17 16 17 16
20 FT WIND GUST.24 20 23 26 23 25 24 25 26 25 25 24
RIDGE WIND DIR..SW W W W W W W SW SW SW SW SW
RIDGE WIND SPD..25 25 25 25 25 25 25 25 25 25 25 25
MIX HGT (KFT)...0.1 0.1 0.5 1.5 2.5 4.5 5.5 8.0 9.5 11 8.0 8.5
TRANSP WIND DIR.SW W W W SW W SW SW SW SW SW SW
TRANSP WIND SPD.23 23 23 26 25 26 25 25 25 24 25 24
SDSPL KT-FT/10003 4 11 37 59 106 124 177 207 217 176 177
FORECAST DAYS 3 THROUGH 5
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE
UPPER 40S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 8 MPH.
SATURDAY
MOSTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. NORTHWEST WINDS
AROUND 7 MPH.
SUNDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. WEST
WINDS AROUND 7 MPH.
FORECASTER...ROWE
REQUESTED BY...ANITA BARTLETT
TYPE OF REQUEST...WILDFIRE
.TAG 2521747.0/RIW
.DELDT 09/10/25
.FORMATTERVERSION 2.0.0
.EMAIL PRFD@RTCONNECT.NET
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