696
FNUS75 KCYS 191246
FWSCYS
SPOT FORECAST FOR CAPE RX...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
546 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 41.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........WEST WINDS 16 TO 24 MPH WITH GUSTS TO AROUND 38
MPH DECREASING TO 6 TO 12 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......3300 FT AGL.
TRANSPORT WINDS.....WEST 37 TO 43 MPH DECREASING TO 22 TO 23 MPH.
SMOKE DISPERSAL.....POOR (34900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (99700 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 (%).........14 19 20 27 22 18 18 14 25 18 20 15
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............28 27 28 33 38 40 40 41 41 41 38 34
RH..............59 61 56 48 40 39 37 35 35 35 37 44
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..24 22 22 22 23 21 21 18 16 12 8 6
20 FT WIND GUST.38 35 35 35 37 33 33 30 25 18 14 10
MIX HGT (KFT)...1.7 1.5 1.4 1.8 2.3 2.8 3.1 3.3 3.3 2.9 2.4 1.9
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.43 39 37 37 39 39 37 33 30 26 23 22
HAINES INDEX....3 3 3 3 3 2 2 2 2 2 2 4
SDSPL KT-FT/100062 51 45 58 77 94 100 96 85 67 48 35
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 22.
MAX HUMIDITY........50 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 16 MPH.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....WEST 22 TO 25 MPH.
SMOKE DISPERSAL.....POOR (18100 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 (%).........15 20 19 18 13 12 15 18 21 26 31 37
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............31 31 30 29 28 28 28 26 25 26 24 26
RH..............50 46 46 46 47 45 45 47 47 42 46 40
20 FT WIND DIR..W W SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..8 12 15 16 15 15 15 15 15 15 15 15
20 FT WIND GUST.14 18 23 25 23 23 23 23 23 23 23 23
MIX HGT (KFT)...1.5 1.2 1.1 0.9 0.9 0.9 0.8 0.8 0.8 0.8 0.8 0.8
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.22 23 24 24 24 24 24 25 25 25 25 25
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 4
SDSPL KT-FT/100029 25 23 20 19 18 18 18 19 19 19 19
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 47.
MIN HUMIDITY........24 PERCENT.
WIND (20 FT)........WEST WINDS 15 TO 17 MPH.
MIXING HEIGHT.......2900 FT AGL.
TRANSPORT WINDS.....WEST 25 TO 33 MPH.
SMOKE DISPERSAL.....POOR (17700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (84100 KNOT-FT) IN THE
AFTERNOON.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........41 43 43 40 37 33 31 31 32 33 33 13
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............27 27 30 35 40 43 44 45 47 45 43 42
RH..............39 38 34 28 25 24 25 25 26 28 30 32
20 FT WIND DIR..SW SW SW SW W W W W W W W W
20 FT WIND SPD..16 16 17 17 16 16 16 16 16 16 15 15
20 FT WIND GUST.25 25 26 26 25 25 25 25 25 25 23 23
MIX HGT (KFT)...0.8 0.8 0.9 1.1 1.4 1.8 2.3 2.7 2.9 2.6 2.1 1.6
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.25 26 26 28 28 29 31 32 33 32 30 28
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 4
SDSPL KT-FT/100018 18 20 26 35 46 61 77 84 73 54 38
FORECASTER...RUBIN
REQUESTED BY...PARKER JOHNSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2428731.0/CYS
.DELDT 12/19/24
.FORMATTERVERSION 2.0.0
.EMAIL PARKER.JOHNSON@USDA.GOV
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