997
FNUS75 KCYS 290331
FWSCYS
SPOT FORECAST FOR SAWMILL...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
931 PM MDT TUE JUL 28 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
THUNDERSTORMS SHOULD BE EXITING THE REGION WITHIN THE NEXT COUPLE
OF HOURS, BUT A LINGERING SHOWER OR STORM CAN'T BE RULED OUT.
TOMORROW WINDS GENERALLY LIGHT TO BREEZY FROM THE SOUTHEAST TO
SOUTH, WITH STRONGER AND ERRATIC WINDS POSSIBLE WITH ANY
THUNDERSTORMS MOVING NEAR THE SITE. BEST CHANCES FOR THUNDERSTORMS
DURING THE LATE AFTERNOON INTO THE EVENING.
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................2 PERCENT.
MIN TEMPERATURE.....AROUND 61.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 9 MPH IN THE LATE EVENING
AND OVERNIGHT BECOMING LIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 9 TO 18 MPH DECREASING TO 7 TO 8 MPH
AFTER 3 AM.
SMOKE DISPERSAL.....POOR (3000 KNOT-FT).
TIME (MDT) 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........22 20 10 15 25 34 43 41
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
TEMP............76 74 72 70 69 67 65 65
RH..............54 55 61 63 66 71 75 73
20 FT WIND DIR..SE SE SE S S S S S
20 FT WIND SPD..9 8 7 6 5 3 2 2
20 FT WIND GUST.17 15 14 10 9 8 7 6
MIX HGT (KFT)...0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.SE SE S S S S S S
TRANSP WIND SPD.18 16 15 12 9 8 7 7
SDSPL KT-FT/10009 7 7 5 4 4 3 3
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 11 PERCENT IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 93.
MIN HUMIDITY........24 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST TO SOUTH 5 TO 7 MPH
WITH GUSTS TO AROUND 20 MPH IN THE LATE MORNING
AND EARLY AFTERNOON. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......9800 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 6 MPH INCREASING TO 17 TO 18 MPH.
SMOKE DISPERSAL.....POOR (1700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (78600 KNOT-FT) IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........61 62 46 36 40 50 49 57 75 77 79 79
WEATHER COV..... SCH CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH CHC CHC CHC CHC CHC
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
TEMP............62 66 71 74 81 86 89 90 90 91 88 87
RH..............76 69 62 57 46 37 31 28 27 24 27 29
20 FT WIND DIR..SW S S SE SE SE SE SE SE SE S S
20 FT WIND SPD..2 2 2 2 5 7 7 7 7 7 8 8
20 FT WIND GUST.6 5 5 7 10 14 16 17 17 20 20 20
MIX HGT (KFT)...0.5 0.4 0.7 1.4 3.1 6.6 9.0 9.8 6.5 5.8 3.8 3.9
TRANSP WIND DIR.S S SE E E SE SE SE SE S S S
TRANSP WIND SPD.6 5 5 6 7 8 9 9 10 13 17 18
SDSPL KT-FT/10003 2 3 7 19 46 72 79 59 64 57 63
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING,
THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING.
CWR.................6 PERCENT.
MIN TEMPERATURE.....AROUND 62.
MAX HUMIDITY........74 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 8 MPH SHIFTING TO THE WEST 6
TO 7 MPH OVERNIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 16 MPH SHIFTING TO THE SOUTHWEST
AROUND 12 MPH LATE IN THE EVENING, THEN
SHIFTING TO THE SOUTH 9 TO 10 MPH LATE IN THE
EVENING SHIFTING TO THE NORTHWEST 9 TO 12 MPH
OVERNIGHT.
SMOKE DISPERSAL.....POOR (4000 KNOT-FT).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........83 71 79 81 69 71 72 71 56 50 54 57
WEATHER COV.....SCH CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........SCH CHC CHC CHC CHC CHC
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
TEMP............86 82 79 75 73 71 70 69 69 67 66 66
RH..............31 37 44 54 59 64 66 66 66 71 70 68
20 FT WIND DIR..S S SW S SE S W NW W W W W
20 FT WIND SPD..8 8 7 7 7 7 6 6 6 6 7 7
20 FT WIND GUST.18 16 15 14 14 12 12 12 10 12 13 13
MIX HGT (KFT)...2.0 2.1 0.6 0.5 0.5 0.5 0.7 0.5 0.5 1.0 0.5 0.5
TRANSP WIND DIR.S S SW SW S S W NW W NW NW W
TRANSP WIND SPD.16 15 10 12 10 9 12 10 9 9 10 9
SDSPL KT-FT/100029 28 5 5 5 4 7 4 4 8 5 4
FORECASTER...GOATLEY
REQUESTED BY...BISIAR
TYPE OF REQUEST...WILDFIRE
.TAG 2618558.0/CYS
.DELDT 07/28/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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