400
FNUS75 KCYS 091139
FWSCYS
SPOT FORECAST FOR MOONSHINE...CASPER DISPATXH
NATIONAL WEATHER SERVICE CHEYENNE WY
539 AM MDT WED SEP 9 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THURSDAY...
DISCUSSION
A RED FLAG WARNING IS IN EFFECT TODAY THROUGH THURSDAY DUE TO LOW
RELATIVE HUMIDITY VALUES, GUSTY WINDS, AND POOR OVERNIGHT
RECOVERIES. FOR TODAY, HUMIDITY VALUES WILL DROP INTO THE SINGLE
DIGITS, WITH WINDS GUSTING AROUND 25 TO 30 MPH. TOMORROW HUMIDITY
VALUES NEAR AS LOW AS 5%, WITH EVEN STRONGER GUSTS IN EXCESS OF
30-35 MPH. OVERNIGHT RECOVERY MAY NOT EVEN REACH 25%.
TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........9 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 12 MPH LATE IN
THE MORNING, THEN INCREASING TO 15 TO 16 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......8700 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 13 MPH INCREASING TO 16 TO 22 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (89400 KNOT-FT) IN THE
AFTERNOON INCREASING TO VERY GOOD (120200
KNOT-FT) EARLY IN THE MORNING INCREASING TO
EXCELLENT (166100 KNOT-FT) IN THE AFTERNOON
LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........13 18 11 7 4 5 8 12 24 28 22 12
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............49 48 52 55 62 66 70 74 76 78 76 76
RH..............48 49 44 41 31 25 19 15 11 10 10 9
20 FT WIND DIR..W W SW S S SW W W W W W W
20 FT WIND SPD..3 3 3 3 3 5 7 9 12 15 16 15
20 FT WIND GUST.7 7 7 7 8 9 13 17 23 28 29 28
MIX HGT (KFT)...0.5 0.5 0.5 1.8 3.0 4.3 5.4 6.4 7.5 8.2 8.7 8.6
TRANSP WIND DIR.NW NW W NW W W W W W W W W
TRANSP WIND SPD.8 7 6 7 7 10 13 16 18 22 22 22
SDSPL KT-FT/10004 3 3 11 18 39 59 89 120 155 166 164
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........23 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 14 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 18 MPH.
SMOKE DISPERSAL..... VERY GOOD (114100 KNOT-FT) EARLY IN THE
EVENING DECREASING TO POOR (22300 KNOT-FT) LATE
IN THE NIGHT DECREASING TO POOR (5000 KNOT-FT)
EARLY IN THE EVENING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........12 9 12 8 6 10 9 14 17 16 22 17
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............76 72 66 63 61 59 58 57 56 56 55 54
RH..............9 12 16 18 19 21 20 21 20 21 22 22
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..14 12 10 9 9 12 12 13 13 14 14 14
20 FT WIND GUST.26 23 20 17 18 20 23 24 25 26 26 26
MIX HGT (KFT)...7.1 1.7 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.18 15 13 12 13 14 15 16 17 17 18 18
SDSPL KT-FT/1000114 22 6 5 5 6 6 7 8 8 8 8
THURSDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........7 PERCENT.
WIND (20 FT)........WEST WINDS 15 TO 21 MPH. GUSTS UP TO 37 MPH
INCREASING TO 40 MPH LATE IN THE MORNING.
MIXING HEIGHT.......7400 FT AGL.
TRANSPORT WINDS.....WEST 18 TO 22 MPH INCREASING TO 28 TO 31 MPH IN
THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (8100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (94400 KNOT-FT) IN THE
AFTERNOON INCREASING TO VERY GOOD (112600
KNOT-FT) EARLY IN THE MORNING INCREASING TO
EXCELLENT (185700 KNOT-FT) IN THE AFTERNOON IN
THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........15 29 18 7 7 7 7 8 8 9 8 7
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 53 56 60 66 72 77 79 80 81 81 81
RH..............22 23 21 19 15 12 9 8 7 7 7 7
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..15 16 17 18 20 21 21 21 21 21 21 21
20 FT WIND GUST.28 30 32 35 37 38 40 40 40 40 40 40
MIX HGT (KFT)...0.5 0.5 0.9 1.4 2.5 3.6 4.7 5.8 6.5 7.2 7.1 7.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.18 21 22 28 31 30 28 29 29 28 29 29
SDSPL KT-FT/10008 9 17 35 67 94 113 145 164 174 177 186
FORECASTER...GOATLEY
REQUESTED BY...MOLLY WARTENBEE
TYPE OF REQUEST...WILDFIRE
.TAG 2621451.1/CYS
.DELDT 09/09/26
.FORMATTERVERSION 2.0.0
.EMAIL JBALDWIN@BLM.GOV,WYCPC@FIRENET.GOV
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