254
FNUS75 KCYS 080518
FWSCYS
SPOT FORECAST FOR MILEPOST 172...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
1118 PM MDT TUE JUL 7 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
THE SHOWERS HAVE DISSIPATED FOR TONIGHT AND A NOCTURNAL INVERSION SHOULD BE SETTING UP
IN THE EARLY MORNING. THIS INVERSION MAY BE STRONG ENOUGH TO LIMIT SMOKE DISPERSAL IN
THE EARLY MORNING BUT WILL QUICKLY ERODE AWAY ONCE SUNRISE BEGINS. AROUND NOON TO 1 PM
TODAY SOME SHOWERS WILL BE FORMING OFF A BOUNDARY THAT MAY GIVE SOME RAIN CHANCES TO THE
MILEPOST 172 AREA. GUSTY WINDS ARE EXPECTED UNDERNEATH THESE SHOWERS WITH ERRATIC WIND
GUSTS UP TO 45 MPH POSSIBLE. THE MORE SEVERE STORMS ARE EXPECTED TO BE FURTHER SOUTH IN
PLATTE AND LARAMIE COUNTY THIS AFTERNOON. HOWEVER, VERY SMALL ACCUMULATING HAIL MAY BE
POSSIBLE IF THESE SHOWERS OVER PERFORM. WINDS SHOULD REMAIN RATHER LIGHT TODAY BETWEEN
5 TO 10 MPH WITH WINDS PICKING UP AFTER 5PM AS THE SWITCH TO A MORE EASTERLY WIND THIS
EVENING.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (30-40 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS LATE IN THE EVENING.
CWR.................6 PERCENT.
MIN TEMPERATURE.....AROUND 59.
MAX HUMIDITY........83 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 7 TO 12 MPH SHIFTING TO THE SOUTH 6
TO 7 MPH AFTER 3 AM.
SMOKE DISPERSAL.....POOR (2900 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 34 34 34 40 40 40
WEATHER COV.....SCH
WEATHER TYPE....RW
TSTM COV........SCH
CWR.............10 0 0 0 0 0 0
TEMP............70 68 67 65 63 62 61
RH..............55 59 61 65 70 72 78
20 FT WIND DIR..N N NW W W W SW
20 FT WIND SPD..2 2 2 2 2 2 2
20 FT WIND GUST.6 5 3 5 6 6 6
MIX HGT (KFT)...0.8 1.3 0.6 0.7 0.5 0.7 0.6
TRANSP WIND DIR.E NE NE NE SE S SW
TRANSP WIND SPD.9 12 8 7 7 7 6
HAINES INDEX....M M M M M M M
SDSPL KT-FT/10006 13 4 4 3 4 3
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). CHANCE OF SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................6 PERCENT.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........18 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 10 MPH IN THE
LATE MORNING AND EARLY AFTERNOON, THEN SHIFTING
TO THE NORTHWEST AROUND 8 MPH LATE IN THE
AFTERNOON SHIFTING TO THE NORTHEAST AROUND 7
MPH LATE IN THE AFTERNOON. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......9100 FT AGL INCREASING TO 11400 FT AGL LATE IN
THE AFTERNOON.
TRANSPORT WINDS.....WEST 6 TO 8 MPH INCREASING TO 8 TO 15 MPH IN
THE LATE MORNING AND EARLY AFTERNOON, THEN
SHIFTING TO THE NORTH AROUND 17 MPH LATE IN THE
AFTERNOON SHIFTING TO THE EAST AROUND 20 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO VERY GOOD (100500 KNOT-FT) IN THE
AFTERNOON INCREASING TO GOOD (93500 KNOT-FT)
EARLY IN THE MORNING INCREASING TO VERY GOOD
(137200 KNOT-FT) IN THE AFTERNOON LATE IN THE
AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........25 25 25 26 26 26 19 19 19 39 39 39
WEATHER COV..... CHC CHC CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ CHC CHC CHC
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
TEMP............59 63 67 71 75 79 83 84 86 87 87 86
RH..............83 72 65 55 46 38 30 26 21 19 18 19
20 FT WIND DIR..SW SW W W W W W W W W NW NE
20 FT WIND SPD..2 2 3 3 5 6 7 8 9 10 8 7
20 FT WIND GUST.6 6 7 7 9 10 13 15 17 18 16 13
MIX HGT (KFT)...0.5 0.8 1.3 2.3 3.1 6.1 7.3 9.1 11 9.8 8.7 5.5
TRANSP WIND DIR.SW W W W W W W W W W N E
TRANSP WIND SPD.6 6 6 8 8 9 10 13 14 15 17 20
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10003 4 7 16 22 49 66 101 137 127 130 94
FORECASTER...MCLAUGHLIN
REQUESTED BY...J. BISIAR
TYPE OF REQUEST...WILDFIRE
.TAG 2616965.0/CYS
.DELDT 07/07/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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