911
FNUS75 KCYS 062049
FWSCYS
SPOT FORECAST FOR MILLER...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
249 PM MDT SUN SEP 6 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227.
DISCUSSION
SHOWERS AND THUNDERSTORMS ARE BEGINNING TO DEVELOP NEAR
THE LARAMIE RANGE THIS AFTERNOON. THIS ACTIVITY WILL LIFT NORTHEAST
INTO NIOBRARA COUNTY THIS EVENING AND CONTINUE OFF AND ON TONIGHT.
A SURFACE COLD FRONT IS FORECAST TO MOVE TOWARDS NIOBRARA COUNTY
MONDAY MORNING. WINDS ARE FORECAST TO SHIFT INTO THE WEST NEAR THIS
FRONT AND BECOME GUSTY LATE MONDAY MORNING THROUGH MONDAY AFTERNOON.
FURTHER OUT INTO TUESDAY, ELEVATED FIRE WEATHER CONDITIONS ARE
EXPECTED AS A DRIER AIRMASS MOVES INTO EAST CENTRAL WYOMING BEHIND
THE COLD FRONT.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). ISOLATED SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................5 PERCENT.
MAX TEMPERATURE.....AROUND 87 DEGREES.
MIN HUMIDITY........AROUND 25 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 6 TO 11 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING HEIGHT.......11500 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 12 MPH.
SMOKE DISPERSAL.....GOOD (80200 KNOT-FT).
TIME (MDT) 3PM 4PM 5PM
SKY (%).........39 39 39
WEATHER COV.....ISO ISO ISO
WEATHER TYPE....RW RW RW
TSTM COV........ISO ISO ISO
CWR.............10 10 10
TEMP............89 88 87
RH..............29 30 31
20 FT WIND DIR..E E SE
20 FT WIND SPD..6 7 9
20 FT WIND GUST.17 16 15
MIX HGT (KFT)...12 11 9.5
TRANSP WIND DIR.S S SE
TRANSP WIND SPD.12 10 12
SDSPL KT-FT/100080 91 95
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-80 PERCENT). SCATTERED
SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
OVERNIGHT.
CWR.................30 PERCENT.
MIN TEMPERATURE.....60 TO 65 DEGREES.
MAX HUMIDITY........60 TO 75 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 15 MPH SHIFTING TO THE
SOUTHWEST AROUND 5 TO 10 MPH AFTER 3 AM. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 12 TO 21 MPH SHIFTING TO THE WEST AROUND
13 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR (5200 KNOT-FT).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........50 50 50 57 57 57 68 68 68 77 77 77
WEATHER COV.....SCT SCT SCT SCT SCT SCT SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW RW
TSTM COV........SCT SCT SCT SCT SCT SCT SCH SCH SCH
CWR.............30 30 30 30 30 30 10 10 10 10 10 10
TEMP............85 81 75 72 70 69 68 68 67 67 66 66
RH..............33 38 48 53 59 63 65 65 68 68 68 68
20 FT WIND DIR..SE SE SE S S S S S S SW SW W
20 FT WIND SPD..7 7 8 8 9 10 10 9 8 7 7 7
20 FT WIND GUST.14 15 15 16 18 20 20 18 16 15 13 13
MIX HGT (KFT)...6.8 1.2 0.5 0.5 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.6
TRANSP WIND DIR.SE SE SE SE S S S S S S S W
TRANSP WIND SPD.14 14 16 18 21 20 18 16 13 12 12 13
SDSPL KT-FT/100081 14 8 8 10 9 9 8 6 5 5 6
LABOR DAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF
SHOWERS IN THE MORNING.
CWR.................5 PERCENT.
MAX TEMPERATURE.....83 TO 88 DEGREES.
MIN HUMIDITY........20 TO 25 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30
MPH INCREASING TO 15 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH LATE IN THE MORNING.
MIXING HEIGHT.......10400 FT AGL INCREASING TO 10500 FT AGL LATE IN
THE AFTERNOON.
TRANSPORT WINDS.....WEST 14 TO 23 MPH INCREASING TO 24 TO 29 MPH
LATE IN THE MORNING.
SMOKE DISPERSAL.....EXCELLENT (232300 KNOT-FT).
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........86 86 86 67 67 67 57 57 57 58 58 58
WEATHER COV.....CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
TEMP............65 65 69 71 76 78 80 81 83 84 84 84
RH..............68 68 57 51 42 38 34 30 27 25 23 22
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..7 8 12 14 16 18 20 21 20 20 18 17
20 FT WIND GUST.13 16 21 26 31 36 38 39 38 37 36 35
MIX HGT (KFT)...0.5 0.7 0.9 1.9 2.9 4.5 5.7 7.9 9.3 10 11 10
TRANSP WIND DIR.W W W W W SW SW W W W W W
TRANSP WIND SPD.14 14 18 22 23 24 26 28 29 29 28 26
SDSPL KT-FT/10006 8 14 36 58 95 130 188 232 260 252 235
REQUESTED BY...JON BISIAR
TYPE OF REQUEST...WILDFIRE
.TAG 2621333.0/CYS
.DELDT 09/06/26
.FORMATTERVERSION 2.0.0
.EMAIL JBISIAR@BLM.GOV,WYCPC@FIRENET.GOV
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