812
FNUS75 KCYS 191245
FWSCYS
SPOT FORECAST FOR WOLD...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
545 AM MST THU DEC 19 2024
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
NORTHWEST FLOW ALOFT WILL PREVAIL FOR TODAY AND FRIDAY WITH
WEAKENING PRESSURE GRADIENTS, HELPING WINDS TO DECREASE
SOMEWHAT DURING THE DAY TODAY. DRY WEATHER WITH A SLOW WARMING
TREND WILL PREVAIL.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 36.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........WEST WINDS 16 TO 23 MPH WITH GUSTS TO AROUND 37
MPH DECREASING TO 8 TO 13 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....WEST 35 TO 44 MPH DECREASING TO 21 TO 29 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (20300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (80000 KNOT-FT) IN THE
AFTERNOON.
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE
PLUME DOMINATED FIRE GROWTH.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........9 13 14 14 21 26 23 23 17 18 19 21
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............23 22 23 27 31 34 35 36 35 35 33 29
RH..............66 68 69 54 48 45 43 40 43 43 44 54
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..23 21 21 21 22 21 21 18 16 13 9 8
20 FT WIND GUST.37 33 33 33 35 33 33 30 25 20 15 14
MIX HGT (KFT)...1.0 0.8 0.7 1.0 1.6 2.0 2.3 2.5 2.4 2.1 1.6 1.1
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.44 40 37 38 39 41 40 37 35 29 24 21
HAINES INDEX....3 3 3 3 3 2 2 2 2 2 2 4
SDSPL KT-FT/100037 26 22 34 54 72 80 80 71 53 33 20
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 16.
MAX HUMIDITY........59 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 16 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....WEST 21 TO 24 MPH.
SMOKE DISPERSAL.....POOR (7800 KNOT-FT).
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........14 18 25 20 19 19 23 24 26 30 35 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............26 24 23 23 22 22 22 20 20 20 18 20
RH..............59 59 59 54 55 55 53 53 51 51 54 49
20 FT WIND DIR..W W SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..10 14 16 16 15 14 14 15 15 15 14 14
20 FT WIND GUST.17 22 25 25 23 22 22 23 23 23 22 22
MIX HGT (KFT)...0.8 0.6 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.21 23 24 24 24 23 23 23 23 23 22 22
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 4
SDSPL KT-FT/100015 12 10 8 8 9 9 9 9 8 8 8
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 40.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........WEST WINDS 14 TO 17 MPH.
MIXING HEIGHT.......1900 FT AGL.
TRANSPORT WINDS.....WEST 23 TO 32 MPH.
SMOKE DISPERSAL.....POOR (6300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (53500 KNOT-FT) IN THE
AFTERNOON.
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE
PLUME DOMINATED FIRE GROWTH.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........42 41 40 38 36 33 30 28 28 30 32 21
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............20 21 24 29 32 36 37 38 40 38 36 34
RH..............48 43 38 32 31 32 33 33 33 37 38 43
20 FT WIND DIR..SW SW SW SW W W W W W W W W
20 FT WIND SPD..15 16 17 17 16 15 15 16 16 15 15 14
20 FT WIND GUST.23 25 26 26 25 23 23 25 25 23 23 22
MIX HGT (KFT)...0.3 0.3 0.4 0.6 0.9 1.2 1.5 1.8 1.9 1.7 1.3 0.9
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.23 24 25 26 28 29 30 32 32 30 26 24
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 3
SDSPL KT-FT/10007 6 8 13 21 29 40 50 54 44 30 19
FORECASTER...RUBIN
REQUESTED BY...PARKER JOHNSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2428733.0/CYS
.DELDT 12/19/24
.FORMATTERVERSION 2.0.0
.EMAIL PARKER.JOHNSON@USDA.GOV
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