697
FNUS75 KRIW 061935
FWSRIW
SPOT FORECAST FOR BLACKROCK PILES...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
1235 PM MST FRI MAR 6 2026
FORECAST IS BASED ON IGNITION TIME OF 1300 MST ON MARCH 06.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
A LINGERING SNOW SHOWER OR TWO IS POSSIBLE THROUGH MID-AFTERNOON
THOUGH WITH LITTLE TO NO ADDITIONAL ACCUMULATION. EXPECT WIND TO
PREVAIL OUT OF THE NORTHWEST THROUGH SUNSET BEFORE BECOMING
LIGHTER OUT OF THE SOUTHWEST UNTIL 2100. WIND WILL THEN BECOME
LIGHT AND DOWNSLOPING THROUGH THE REST OF THE NIGHT. SKIES WILL
BECOME MOSTLY CLEAR THIS EVENING LEADING TO A COLD SATURDAY
MORNING. SATURDAY WILL SEE SLIGHT SNOW CHANCES RETURN WITH LIGHT
WIND OUT OF THE WEST.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (30-50 PERCENT). 40 PERCENT CHANCE
OF A SNOW SHOWER BEFORE 5 PM.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 35.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........NORTHWEST AROUND 7 MPH.
RIDGETOP WIND.......NORTHWEST AROUND 15 MPH.
MIXING HEIGHT.......INCREASING TO 6500 FT AGL BY 1400.
TRANSPORT WINDS.....NORTH 15 TO 17 MPH.
SMOKE DISPERSAL.....GOOD.
TIME (MST) 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 60 60 50 25
WEATHER COV.....SCT SCT SCT ISO
WEATHER TYPE....SW SW SW SW
TSTM COV........
CHC OF PCPN (%).40 40 30 20 0
TEMP............33 34 35 35 35
RH..............50 45 42 42 45
20 FT WIND DIR..NW NW NW NW NW
20 FT WIND SPD..6 6 6 7 6
20 FT WIND GUST.10 10 10 10 10
RIDGE WIND DIR..NW NW NW NW NW
RIDGE WIND SPD..15 15 15 15 15
MIX HGT (KFT)...5.5 6.5 6.0 6.0 5.5
TRANSP WIND DIR.N N N NW N
TRANSP WIND SPD.16 16 16 17 15
SDSPL KT-FT/100080 92 88 89 69
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). PATCHY FOG
OVERNIGHT.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 12.
MAX HUMIDITY........86 PERCENT.
WIND (20 FT)........SOUTHWEST AROUND 5 MPH UNTIL 2100, THEN BECOMING
EAST 3 TO 4 MPH.
RIDGETOP WIND.......SOUTHWEST AROUND 10 MPH UNTIL 2100, THEN BECOMING
EAST AROUND 10 MPH BY 2200.
MIXING HEIGHT.......DECREASING TO AROUND 1000 FT AGL BY 2100.
TRANSPORT WINDS.....NORTH 7 TO 10 MPH, BECOMING SOUTH AROUND 8 MPH
BY 0200.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........15 10 10 5 5 5 5 5 5 10 20 20
WEATHER COV..... PTY PTY PTY PTY
WEATHER TYPE.... FOG FOG FOG FOG
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 10
TEMP............30 26 24 22 20 18 17 16 15 15 14 14
RH..............58 65 70 73 76 77 79 79 84 84 84 84
20 FT WIND DIR..WSW SW SW N E E E E E E E E
20 FT WIND SPD..5 4 3 2 2 3 3 3 3 3 3 3
20 FT WIND GUST.6 6 4 4 4 4 4 4 4 4
RIDGE WIND DIR..W SW SW N E E E E E E E E
RIDGE WIND SPD..10 10 10 5 5 10 10 10 10 10 10 10
MIX HGT (KFT)...3.0 2.0 1.5 1.0 1.0 1.5 1.0 1.5 1.5 1.0 1.5 1.5
TRANSP WIND DIR.NW NW N N NE E SE E S S S SW
TRANSP WIND SPD.10 9 8 7 7 8 8 8 8 8 8 8
SDSPL KT-FT/100026 15 9 7 7 9 9 9 9 9 9 9
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (80-90 PERCENT). PATCHY FOG EARLY
IN THE MORNING. SCATTERED SNOW SHOWERS THROUGH
THE DAY.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 35.
MIN HUMIDITY........71 PERCENT.
WIND (20 FT)........EAST 3 TO 4 MPH TRANSITIONING TO WEST 5 TO 6 MPH
BY 1300.
RIDGETOP WIND.......EAST AROUND 10 MPH UNTIL 1000, THEN WEST.
MIXING HEIGHT.......INCREASING TO 3000 FT AGL BY 1300.
TRANSPORT WINDS.....SOUTHWEST 8 TO 10 MPH UNTIL 1000, THEN WEST 12
TO 16 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO FAIR BY 1400. DECREASING TO
POOR BY 1700.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 50 60 80 85 90 80 80 85 85 90 90
WEATHER COV.....PTY PTY ISO ISO SCT SCT ISO SCT SCT SCT SCT
WEATHER TYPE....FOG FOG SW SW SW SW SW SW SW SW SW
TSTM COV........
CHC OF PCPN (%).10 10 10 20 20 30 30 20 30 30 30 30
TEMP............14 13 16 18 22 26 30 32 33 34 35 33
RH..............82 82 82 82 80 76 71 73 71 69 70 76
20 FT WIND DIR..E E E NE N NW NW W W W W W
20 FT WIND SPD..3 3 3 3 3 3 4 5 6 6 5 5
20 FT WIND GUST.4 4 4 4 4 5 6 7 8 7 7 7
RIDGE WIND DIR..E E E NE N NW NW W W W W W
RIDGE WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...1.5 1.5 1.5 1.5 2.0 2.5 2.5 3.0 3.0 3.0 2.5 2.5
TRANSP WIND DIR.S SW W SW W W W W W W W W
TRANSP WIND SPD.8 8 8 9 10 13 14 15 15 16 16 12
SDSPL KT-FT/10009 9 9 13 19 27 32 38 40 40 36 23
FORECAST DAYS 3 THROUGH 5
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN THE MID 20S.
HIGHS IN THE LOWER 40S. SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO
15 MPH.
MONDAY
MOSTLY CLOUDY. SNOW SHOWERS LIKELY. LOWS AROUND 30. HIGHS IN THE
LOWER 40S. SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS OF 20 TO 25
MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS AROUND 20. HIGHS IN
THE LOWER 30S. SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS OF 20 TO 25
MPH.
FORECASTER...MYERS
REQUESTED BY...JOSHUA ERICKSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2604962.0/RIW
.DELDT 03/06/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSHUA.ERICKSON@USDA.GOV
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