844
FNUS75 KCYS 152256
FWSCYS
SPOT FORECAST FOR ROOT FIRE...FOREST SERVICE
NATIONAL WEATHER SERVICE CHEYENNE WY
456 PM MDT TUE SEP 15 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
OVERNIGHT SOME SHOWERS ARE POSSIBLE NEARBY. WETTING RAIN IS NOT
ANTICIPATED WITH MOSTLY CLOUDY CONDITIONS PREVAILING. THERE IS A LOW
CONFIDENCE (20-40%) IN WIND GUSTS (ABOVE 40 MPH) FROM THIS SHOWER
ACTIVITY BETWEEN MIDNIGHT AND 3 AM EXCEEDING THE PROVIDED FORECAST.
OVERNIGHT HUMIDITY RECOVERIES ARE FAIR AT 70%. TOMORROW MINIMUM
HUMIDITY VALUES ARE BETWEEN 35-25% WITH PREVAILING SOUTHWEST TO WEST
WINDS WITH GUSTS UP TO 30-35 MPH POSSIBLE. A FEW NEARBY SHOWERS,
BUT WETTING RAINFALL CONFIDENCE IS LOW.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT).
CWR.................3 PERCENT.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........69 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 12 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 21 MPH.
SMOKE DISPERSAL.....FAIR (46300 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (9100 KNOT-FT) LATE IN THE
NIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........45 56 32 35 48 50 42 50 54 48 47 37
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............66 63 59 57 55 54 52 55 54 54 54 54
RH..............32 38 45 53 57 61 66 61 64 64 64 66
20 FT WIND DIR..S S S S S S S S S S SW SW
20 FT WIND SPD..7 7 8 9 10 12 12 12 12 12 12 12
20 FT WIND GUST.13 14 15 17 20 21 22 23 23 22 22 22
MIX HGT (KFT)...3.9 1.0 0.7 0.6 0.6 0.5 0.6 0.6 0.5 0.6 0.6 0.6
TRANSP WIND DIR.S SE S S S S S S S SW SW SW
TRANSP WIND SPD.14 13 16 20 21 20 21 20 20 20 20 20
SDSPL KT-FT/100046 11 9 10 10 9 10 10 9 9 10 9
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................4 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 MPH.
MIXING HEIGHT.......7600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 22 MPH.
SMOKE DISPERSAL.....POOR (9500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (78600 KNOT-FT) IN THE
AFTERNOON INCREASING TO GOOD (65000 KNOT-FT)
EARLY IN THE MORNING INCREASING TO VERY GOOD
(126500 KNOT-FT) IN THE AFTERNOON IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........42 47 38 28 37 29 36 48 46 48 52 62
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 54 55 59 63 67 69 72 73 73 72 71
RH..............66 69 64 57 52 43 39 34 33 31 34 36
20 FT WIND DIR..SW SW SW SW SW SW SW W W W W W
20 FT WIND SPD..12 12 12 12 12 12 12 10 9 7 7 6
20 FT WIND GUST.21 21 21 21 21 21 21 18 16 14 12 10
MIX HGT (KFT)...0.6 0.6 0.7 1.3 2.5 4.1 5.8 7.0 7.4 7.6 7.3 5.9
TRANSP WIND DIR.SW SW SW SW W W W W W W W SW
TRANSP WIND SPD.20 20 20 22 22 22 22 20 20 18 17 13
SDSPL KT-FT/100010 10 12 25 47 79 111 119 127 121 110 65
FORECASTER...VASQUEZ
REQUESTED BY...CASPER DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 2621960.0/CYS
.DELDT 09/15/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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