408
FNUS75 KRIW 182113
FWSRIW
SPOT FORECAST FOR SHEEP CREEK...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
313 PM MDT MON OCT 18 2021
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON OCTOBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 6 PM MDT
TUESDAY...
DISCUSSION
CLOUDY SKIES WILL CONTINUE THROUGH THE REST OF THE AFTERNOON, AS A
STORM SYSTEM APPROACHES THE REGION. INCREASING CHANCES FOR
PRECIPITATION THIS EVENING, WITH SNOW LIKELY AFTER MIDNIGHT. SNOW
WILL CONTINUE THROUGH THE MORNING, WITH DECREASING CHANCES THROUGH
TUESDAY AFTERNOON. SNOWFALL AMOUNTS OF 2 TO 4 INCHES EXPECTED.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
..HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT
FORECASTER...LAVOIE
REST OF TODAY
SKY/WEATHER.........CLOUDY (75-85 PERCENT). ISOLATED RAIN SHOWERS.
MAX TEMPERATURE.....50-53.
MIN HUMIDITY........28-31 PERCENT.
20-FOOT WINDS.......EAST-SOUTHEAST 10-20 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3.
MIXING HEIGHT.......3800 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.
SMOKE DISPERSAL.....FAIR.
TIME (MDT) 4PM 5PM
SKY (%).........81 81
WEATHER COV.....ISO ISO
WEATHER TYPE....RW RS
TSTM COV........
CWR.............0 0
LAL.............1 1
TEMP............47 45
RH..............43 45
20 FT WIND DIR..SE SE
20 FT WIND SPD..8 8
20 FT WIND GUST.15 15
MIX HGT (KFT)...3.8 3.8
TRANSP WIND DIR.SE SE
TRANSP WIND SPD.15 15
HAINES INDEX....3 3
SDSPL KT-FT/100049 49
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SCATTERED RAIN
SHOWERS IN THE EVENING, THEN SNOW SHOWERS
AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........82-85 PERCENT.
20-FOOT WINDS.......EAST WINDS AROUND 10 TO 15 MPH EARLY IN THE
EVENING, THEN BECOMING NORTHEAST 8 TO 11 MPH
LATE IN THE EVENING. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.25 PERCENT INCREASING TO 73 PERCENT OVERNIGHT.
HAINES INDEX........2 TO 3.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....NORTHEAST 14 TO 22 MPH INCREASING TO AROUND 24
MPH AFTER 3 AM.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........85 85 85 77 77 77 67 67 67 91 91 91
WEATHER COV..... SCT SCT NUM SCT SCT SCT SCT DEF DEF DEF DEF
WEATHER TYPE.... RS SW SW SW SW SW SW SW SW SW SW
TSTM COV........
CWR.............30 30 30 30 30 30 70 70 70 70 70 70
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............41 40 38 36 36 35 34 33 32 31 31 30
RH..............50 55 60 66 69 71 72 74 75 77 78 79
20 FT WIND DIR..E E E NE NE NE NE NE NE NE NE NE
20 FT WIND SPD..8 7 7 7 7 8 9 9 10 10 10 11
20 FT WIND GUST.17 16 15 15 16 17 18 18 20 20 18 17
MIX HGT (KFT)...1.0 1.0 1.0 0.9 0.9 0.9 0.9 0.9 0.9 1.0 1.0 1.0
TRANSP WIND DIR.E E E NE NE NE NE NE NE NE NE NE
TRANSP WIND SPD.14 14 14 20 20 20 22 22 22 24 24 24
HAINES INDEX....3 3 3 3 3 3 2 2 2 2 2 2
SDSPL KT-FT/100012 12 12 15 15 15 17 17 17 22 22 22
TUESDAY
SKY/WEATHER.........CLOUDY (80-90 PERCENT). SNOW THROUGH THE
MORNING, DECREASING IN THE AFTERNOON.
MAX TEMPERATURE.....34-37.
MIN HUMIDITY........79-82 PERCENT.
20-FOOT WINDS.......NORTHEAST WINDS 10 TO 11 MPH.
GUSTS UP TO 17 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.91 PERCENT DECREASING TO 15 PERCENT IN THE
AFTERNOON.
HAINES INDEX........2.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 23 MPH, THEN SHIFTING TO
THE NORTHEAST 14 TO 16 MPH IN THE
AFTERNOON.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........97 97 97 95 95 95 83 83 83 69 69 69
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF LKY CHC CHC CHC CHC
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............90 90 90 90 90 90 20 20 20 20 20 20
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............29 29 29 30 30 31 32 33 34 35 34 32
RH..............80 81 83 84 83 82 80 77 74 73 76 82
20 FT WIND DIR..NE NE NE NE NE N N N N N N N
20 FT WIND SPD..11 10 8 8 8 9 9 9 8 8 7 6
20 FT WIND GUST.17 16 16 16 16 17 17 17 17 16 15 14
MIX HGT (KFT)...0.9 0.9 0.9 0.9 0.9 0.9 1.3 1.3 1.3 1.5 1.5 1.5
TRANSP WIND DIR.NE NE NE S S S NE NE NE NE NE NE
TRANSP WIND SPD.23 23 23 20 20 20 16 16 16 14 14 14
HAINES INDEX....2 2 2 2 2 2 2 2 2 2 2 2
SDSPL KT-FT/100019 19 19 15 15 15 18 18 18 17 17 17
FORECAST DAYS 3 THROUGH 5
TUESDAY NIGHT
PARTLY CLOUDY. CHANCE OF SNOW IN THE EVENING. LOWS AROUND 20.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS AROUND 40. WINDS
GENERALLY LESS THAN 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S.
WEST WINDS AROUND 12 MPH.
FRIDAY
PARTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE MID 40S. WEST WINDS
AROUND 10 MPH.
FORECASTER...LAVOIE
REQUESTED BY...LESLIE ZOLLINGER
TYPE OF REQUEST...WILDFIRE
.TAG 2119667.0/RIW
.DELDT 10/18/21
.EMAIL WYCDC@FIRENET.GOV
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