418
FNUS75 KCYS 272205
FWSCYS
SPOT FORECAST FOR HORSETOOTH...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
ISSUED BY NATIONAL WEATHER SERVICE RIVERTON WY
405 PM MDT MON JUL 27 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE AT (307) 772-2227.
DISCUSSION
SCATTERED SHOWERS AND THUNDERSTORMS PERSIST THROUGH MOST OF
MONDAY EVENING AS A PLUME OF MOISTURE STREAMS ACROSS THE
DISTRICT. PRECIPITATION CHANCES AND CLOUD COVER FADE EARLY
TUESDAY MORNING. THE MOISTURE PLUME REMAINS IN PLACE TUESDAY
LEADING TO ANOTHER ROUND OF LATE MORNING SHOWERS FOLLOWED BY
SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS. LITTLE CHANGE
IS EXPECTED IN THE WEATHER PATTERN FOR THE NEXT SEVERAL DAYS.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) WITH SCATTERED
SHOWERS AND THUNDERSTORMS.
CWR.................5 PERCENT.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........21-24 PERCENT.
WIND (20 FT)........SOUTHERLY 10 TO 13 MPH WITH GUSTS AROUND
20 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
SHOWERS AND THUNDERSTORMS.
MIXING HEIGHT.......AROUND 4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 14 TO 18 MPH.
SMOKE DISPERSAL.....GOOD.
TIME (MDT) 4PM 5PM
SKY (%).........83 70
WEATHER COV.....CHC CHC
WEATHER TYPE....RW RW
TSTM COV........CHC CHC
CWR.............0 0
TEMP............91 90
RH..............25 24
20 FT WIND DIR..S S
20 FT WIND SPD..10 12
20 FT WIND GUST.16 18
MIX HGT (KFT)...4.2 3.8
TRANSP WIND DIR.SW SW
TRANSP WIND SPD.14 16
SDSPL KT-FT/100060 60
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) WITH SCATTERED
SHOWERS AND THUNDERSTORMS UNTIL 2300, THEN
BECOMING PARTLY (40-50 PERCENT) WITH ISOLATED
SHOWERS UNTIL 0400.
CWR.................15 PERCENT.
MIN TEMPERATURE.....65 TO 68.
MAX HUMIDITY........68-72 PERCENT.
WIND (20 FT)........SOUTH WIND 12 TO 16 MPH WITH GUSTS AROUND
20 MPH SHIFTING TO THE NORTHWEST AROUND 10 MPH
BETWEEN 1900 AND 2100. WIND THEN BECOMING
NORTHEAST 7 TO 11 MPH BETWEEN 2200 AND 2400.
WIND THEN SHIFTING BACK TO THE SOUTHWEST
6 TO 10 MPH BETWEEN 0200 AND 0400. GUSTY AND
ERRATIC WINDS EXPECTED NEAR SHOWERS AND
THUNDERSTORMS.
MIXING HEIGHT.......GRADUALLY DECREASING TO LESS THAN 1000 FT AGL
BY 2200.
TRANSPORT WINDS.....SOUTHWEST 14 TO 18 MPH SHIFTING TO THE
NORTHEAST 10 TO 15 MPH BETWEEN 2100 AND 2300.
BECOMING SOUTHWEST 6 TO 10 MPH BETWEEN
0200 AND 0400.
SMOKE DISPERSAL.....GOOD UNTIL 2000, THEN BECOMING POOR BY 2200.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........57 61 60 84 57 60 58 44 34 23 23 28
WEATHER COV.....SCH CHC SCH SCH SCH CHC CHC CHC ISO ISO
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW
TSTM COV........SCH CHC SCH SCH SCH SCH
CWR.............10 10 10 10 10 10 20 20 20 20 20 20
TEMP............88 85 82 78 75 74 73 71 70 69 68 68
RH..............29 35 43 50 58 59 62 65 67 69 71 72
20 FT WIND DIR..S S NW NE E SW NW N E E SE SW
20 FT WIND SPD..16 13 10 10 8 12 7 7 9 8 6 2
20 FT WIND GUST.25 21 16 16 14 18 12 12 15 14 9 5
MIX HGT (KFT)...3.9 2.7 0.9 0.7 0.7 0.7 1.0 0.6 0.5 0.6 0.5 0.5
TRANSP WIND DIR.SW SW NE NE NE E E E E E E E
TRANSP WIND SPD.20 16 16 18 18 16 13 9 12 10 8 7
SDSPL KT-FT/100067 38 12 11 12 10 11 4 5 5 4 3
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) UNTIL 1300 WITH
ISOLATED SHOWERS AFER 0900. AFTER 1300,
BECOMING MOSTLY CLOUDY (60-70 PERCENT) WITH
A CHANCE OF SHOWERS AND THUNDERSTORMS.
CWR.................5 PERCENT UNTIL 1300, THEN INCREASING TO
30 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........33-36 PERCENT.
WIND (20 FT)........SOUTH-SOUTHWEST WIND 4 TO 7 MPH UNTIL 0900,
THEN BECOMING EAST-NORTHEAST 6 TO 10 MPH
WITH GUSTS 16 TO 20 MPH AFTER 1200. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING HEIGHT.......LESS THAN 1000 FT AGL UNTIL 0900, THEN
GRADUALLY INCREASING TO AROUND 7500 FT AGL
BY 1400.
TRANSPORT WINDS.....SOUTH-SOUTHWEST 5 TO 8 MPH UNTIL 0900, THEN
BECOMING NORTHEAST 10 TO 15 MPH BY 1200.
THERE COULD BE A SHIFT TO THE EAST-SOUTHEAST
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN GRADUALLY INCREASING
TO GOOD BY 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........36 21 12 16 16 11 17 32 65 53 74 52
WEATHER COV..... SCH SCH SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TSTM COV........ CHC CHC CHC CHC CHC CHC
CWR.............10 10 10 10 10 10 30 30 30 30 30 30
TEMP............67 69 72 76 79 82 84 85 85 85 87 84
RH..............84 78 73 62 56 47 41 40 39 39 36 38
20 FT WIND DIR..S SE S SW N NE E NE NE E E E
20 FT WIND SPD..2 2 2 2 2 2 3 3 5 6 6 7
20 FT WIND GUST.5 7 6 8 9 12 14 15 17 18 20 18
MIX HGT (KFT)...0.6 0.6 1.1 1.7 2.8 4.6 6.5 7.0 7.7 7.9 6.8 4.7
TRANSP WIND DIR.S S W NW N N N N N E SE SE
TRANSP WIND SPD.7 7 7 7 7 7 7 9 9 9 9 12
SDSPL KT-FT/10003 4 7 10 17 28 39 56 62 63 54 47
FORECASTER...CNJ
REQUESTED BY...SPAULDING
TYPE OF REQUEST...WILDFIRE
.TAG 2618262.1/CYS
.DELDT 07/27/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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