663
FNUS75 KCYS 010417
FWSCYS
SPOT FORECAST FOR SHAMMEL...CASPER INTERAGENCY DISPATCH
NATIONAL WEATHER SERVICE CHEYENNE WY
1017 PM MDT TUE JUN 30 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
A LINGERING SHOWER OR TWO WILL BE POSSIBLE THROUGH ABOUT 2 AM AS A STORM
SYSTEM EXITS THE AREA. OVERNIGHT HUMIDITY RECOVERIES ARE EXPECTED TO BE
GOOD WITH A MAXIMUM HUMIDITY AROUND 80 PERCENT. WINDS OVERNIGHT WILL
GENERALLY BE LIGHT AND VARIABLE. WEAK WEST TO NORTHWEST WINDS ARE EXPECTED
THROUGHOUT THE DAY WEDNESDAY. DRY CONDITIONS ARE ONCE AGAIN FORECAST WITH
A MINIMUM RELATIVE HUMIDITY AROUND 15 PERCENT. WARM TEMPERATURES AND MOSTLY
SUNNY SKIES ARE EXPECTED WEDNESDAY WITH MINIMAL CHANCES FOR PRECIPITATION.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
MOSTLY CLEAR (20-30 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS LATE IN THE EVENING.
CWR.................13 PERCENT DECREASING TO 3 PERCENT OVERNIGHT.
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........80 PERCENT.
WIND (20 FT)........EAST WINDS 6 TO 7 MPH SHIFTING TO THE SOUTH
AROUND 5 MPH AFTER 3 AM, THEN BECOMING LIGHT
EARLY IN THE MORNING. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE
EVENING.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....EAST AROUND 13 MPH SHIFTING TO THE NORTH
OVERNIGHT, THEN SHIFTING TO THE EAST AROUND 8
MPH AFTER 3 AM SHIFTING TO THE NORTHWEST EARLY
IN THE MORNING.
SMOKE DISPERSAL.....POOR (3000 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........51 56 39 31 29 16 9
WEATHER COV.....SCH
WEATHER TYPE....RW
TSTM COV........SCH
CWR.............10 0 0 0 0 0 0
TEMP............62 60 58 57 55 55 54
RH..............62 64 69 75 80 77 74
20 FT WIND DIR..E NE E SE SE S W
20 FT WIND SPD..7 6 6 6 6 5 3
20 FT WIND GUST.13 10 10 10 9 8 7
MIX HGT (KFT)...0.6 0.5 0.5 0.5 0.4 0.5 0.5
TRANSP WIND DIR.E N N NE NE E NW
TRANSP WIND SPD.13 14 14 12 8 8 8
HAINES INDEX....M M M M M M M
SDSPL KT-FT/10006 6 6 5 3 3 3
WEDNESDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........13 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH IN
THE LATE MORNING AND EARLY AFTERNOON, THEN
BECOMING LIGHT LATE IN THE AFTERNOON.
MIXING HEIGHT.......9100 FT AGL INCREASING TO 12400 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....WEST 7 TO 14 MPH.
SMOKE DISPERSAL.....POOR (2900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (89200 KNOT-FT) IN THE
AFTERNOON INCREASING TO VERY GOOD (108900
KNOT-FT) IN THE AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 5 2 1 1 3 3 4 9 8 11 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 59 64 69 72 75 78 80 81 83 84 84
RH..............69 62 50 39 33 27 22 19 18 17 16 14
20 FT WIND DIR..NW W W NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..2 2 3 5 6 6 5 5 3 2 2 2
20 FT WIND GUST.5 9 12 14 15 16 16 16 16 15 15 15
MIX HGT (KFT)...0.5 0.5 1.5 2.5 4.9 7.4 9.1 11 12 12 12 12
TRANSP WIND DIR.W W W W NW W W W W W W W
TRANSP WIND SPD.7 7 10 13 14 14 14 14 14 13 13 12
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10003 3 13 28 59 89 109 126 138 134 134 124
FORECASTER...FULLER
REQUESTED BY...MOLLY WARTENBEE
TYPE OF REQUEST...WILDFIRE
.TAG 2616562.0/CYS
.DELDT 06/30/26
.FORMATTERVERSION 2.0.0
.EMAIL AARON.KAMM@WYO.GOV,WYCPC@FIRENET.GOV
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