224
FNUS75 KRIW 072159
FWSRIW
SPOT FORECAST FOR BARE FIRE...WYUSFS
NATIONAL WEATHER SERVICE RIVERTON WY
359 PM MDT FRI AUG 7 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON AUGUST 08.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
WARM AND DRY CONDITIONS CONTINUE ON SATURDAY. WIND WILL BE A
LITTLE STRONGER, INCREASING AFTER 1000 WITH WEST-NORTHWESTERLY
GUSTS OF 20 TO 25 MPH THROUGH THE AFTERNOON. EXPECT RIDGETOPS
GUSTS OF 25 TO 30 MPH. THERE WILL BE SOME CUMULUS BUILDUP IN THE
AFTERNOON, AND A FEW VIRGA SHOWERS CANNOT BE RULED OUT. WHILE RAIN
CHANCES REMAIN VERY LOW, THIS WILL BRING A 20 PERCENT CHANCE OF
GUSTY OUTFLOW WINDS TO 40 MPH THROUGH THE AFTERNOON. WIND WILL
QUICKLY DECREASE AFTER SUNSET, WITH OVERNIGHT WINDS BECOMING DOWN
DRAINAGE OR GENERALLY WESTERLY. HUMIDITY RECOVERY WILL REMAIN POOR
SATURDAY NIGHT. SUNDAY WILL BE SIMILAR, WITH A SLIGHTLY INCREASED
CHANCE FOR DRY THUNDERSTORMS IN THE AFTERNOON (AROUND 15%).
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
SATURDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF PCPN......5 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
MAX TEMPERATURE.....AROUND 79.
MIN HUMIDITY........17 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1000, THEN WEST-NORTHWEST
10 TO 13 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1100, THEN AROUND 20
MPH.
MIXING HEIGHT.......INCREASING TO 12,000 FT AGL BY 1400.
TRANSPORT WINDS.....WEST 14 TO 23 MPH UNTIL 1200, THEN 21 TO 25
MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000, INCREASING TO EXCELLENT BY
1200.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........15 20 10 10 5 20 15 20 25 20 25
WEATHER COV.....PTY PTY ARS ARS PTY PTY PTY PTY ARS ARS ARS
WEATHER TYPE....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
CHC OF PCPN (%).0 0 0 0 0 5 5 5 5 5 5
CHC OF THDR (%).0 0 0 0 0 5 5 5 5 5 5
TEMP............55 59 65 71 74 76 78 79 79 78 78
RH..............33 33 28 22 20 18 17 17 17 17 17
20 FT WIND DIR..W W W W WNW WNW WNW WNW WNW WNW WNW
20 FT WIND SPD..6 6 6 10 13 13 13 13 13 13 12
20 FT WIND GUST.12 13 11 18 22 23 23 24 24 24 23
RIDGE WIND DIR..W W W W WNW WNW WNW WNW WNW WNW WNW
RIDGE WIND SPD..15 15 10 15 20 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 2.5 6.0 8.0 9.5 11 12 12 12 11
TRANSP WIND DIR.W W W W W W W W W W W
TRANSP WIND SPD.14 14 15 20 23 25 25 24 24 22 21
SDSPL KT-FT/10007 8 34 99 160 212 244 250 256 216 199
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). SMOKE.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........37 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 12 MPH WITH GUSTS TO AROUND 22
MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4 TO 6 MPH.
RIDGETOP WIND.......WEST 15 TO 20 MPH UNTIL 2200, THEN AROUND 10
MPH.
MIXING HEIGHT.......10000 FT AGL UNTIL 1900. 500 FT AGL AFTER 2000.
TRANSPORT WINDS.....WEST 12 TO 20 MPH.
SMOKE DISPERSAL.....EXCELLENT BECOMING POOR AFTER 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........25 25 30 10 5 10 5 15 25 20 25 25
WEATHER COV.....PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY 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 (%).5 5 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).5 5 0 0 0 0 0 0 0 0 0 0
TEMP............78 75 73 68 65 63 62 61 60 59 58 58
RH..............19 21 24 27 30 32 33 34 35 35 36 36
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..12 10 8 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.22 21 16 13 11 11 11 10 10 10 10 10
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..20 15 15 15 10 10 10 10 10 10 10 10
MIX HGT (KFT)...10 5.0 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 W W W W W W W W W W
TRANSP WIND SPD.20 17 15 13 12 12 12 12 12 13 13 12
SDSPL KT-FT/1000173 74 11 6 6 6 6 6 6 6 6 6
SUNDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...15 PERCENT.
MAX TEMPERATURE.....AROUND 79.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1100, THEN WEST 9 TO 13 MPH
WITH GUSTS TO AROUND 22 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......INCREASING TO 13,000 FT AGL BY 1400.
TRANSPORT WINDS.....WEST 12 TO 21 MPH UNTIL 1200, THEN 20 TO 24
MPH.
SMOKE DISPERSAL.....POOR INCREASING TO EXCELLENT AFTER 1100.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 20 20 15 15 15 15 20 20 25 25 25
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 5 5 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 5 5 10 15 15 15 15 15
TEMP............57 56 60 65 69 73 76 78 78 79 79 78
RH..............38 39 36 31 27 24 22 21 20 20 20 20
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..6 6 5 5 6 9 12 13 13 12 12 12
20 FT WIND GUST.11 10 10 10 13 18 21 22 22 22 22 22
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..10 10 10 10 15 15 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 2.5 4.5 7.0 9.5 12 12 13 13 12 11
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.13 12 14 15 18 21 24 23 22 21 20 20
SDSPL KT-FT/10006 7 30 56 109 167 246 242 236 230 201 184
FORECAST DAYS 3 THROUGH 5
MONDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. MINIMUM RELATIVE
HUMIDITY AROUND 20 PERCENT. WEST WINDS 8 TO 12 MPH WITH GUSTS OF
20 TO 25 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. MINIMUM
RELATIVE HUMIDITY AROUND 20 PERCENT. WEST WINDS 8 TO 12 MPH WITH
GUSTS OF 20 TO 25 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S. MINIMUM
RELATIVE HUMIDITY AROUND 20 PERCENT. WEST WINDS 8 TO 12 MPH WITH
GUSTS OF 20 TO 25 MPH.
FORECASTER...MYERS
REQUESTED BY...BEN HOYLE
TYPE OF REQUEST...WILDFIRE
.TAG 2619156.0/RIW
.DELDT 08/07/26
.FORMATTERVERSION 2.0.0
.EMAIL BENJAMIN_HOYLE@FIRENET.GOV
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