890
FNUS75 KCYS 270248
FWSCYS
SPOT FORECAST FOR SOUTH FORK...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
848 PM MDT FRI JUN 26 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
SHOWERS AND THUNDERSTORMS WILL DIMINISH IN COVERAGE OVER THE NEXT
HOUR OR SO, BECOMING RELATIVELY DRY OVERNIGHT. EXPECT GOOD
OVERNIGHT RH RECOVERY WITH MIN RH VALUES ONLY DIPPING TO AROUND
20 PERCENT BY SATURDAY AFTERNOON. CHANCES OF RAIN AND/OR
THUNDERSTORMS INCREASE ONCE AGAIN FOR THE AFTERNOON HOURS
SATURDAY, HOWEVER THIS WILL NOT BE WIDESPREAD. SO, THE FIRE MAY
NOT SEE ANY PRECIPITATION OR IF A STORM GOES OVER, POTENTIAL BURN
SCAR FLOODING COULD BECOME AN ISSUE. OVERALL, ELEVATED FIRE
WEATHER CONCERNS WILL BE LOW FOR THE NEXT WEEK OR SO.
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CWR.................3 PERCENT.
MIN TEMPERATURE.....AROUND 62.
MAX HUMIDITY........75-87 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 18 TO 24 MPH WITH GUSTS TO
AROUND 46 MPH.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 26 TO 30 MPH.
SMOKE DISPERSAL.....POOR (12100 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........36 30 23 21 22 33
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............68 67 66 64 63 63
RH..............66 69 72 75 79 80
20 FT WIND DIR..S S SW SW SW SW
20 FT WIND SPD..24 24 24 23 24 24
20 FT WIND GUST.46 45 45 44 45 46
MIX HGT (KFT)...0.6 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR.S S SW SW SW SW
TRANSP WIND SPD.30 29 29 28 26 26
HAINES INDEX....M M M M M M
SDSPL KT-FT/100016 16 15 16 15 14
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................4 PERCENT.
MAX TEMPERATURE.....AROUND 93.
MIN HUMIDITY........17 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 14 TO 24 MPH WITH GUSTS TO
AROUND 46 MPH DECREASING TO 13 TO 15 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......9600 FT AGL INCREASING TO 12800 FT AGL LATE IN
THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 22 TO 28 MPH.
SMOKE DISPERSAL.....POOR (12400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO VERY GOOD (106600 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (166500
KNOT-FT) EARLY IN THE AFTERNOON, THEN
INCREASING TO EXCELLENT (293300 KNOT-FT) LATE
IN THE AFTERNOON DECREASING TO EXCELLENT
(182100 KNOT-FT) LATE IN THE AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........42 32 26 29 32 21 12 18 47 42 44 46
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............62 66 70 74 80 83 87 89 90 92 90 88
RH..............82 72 61 51 37 30 22 19 18 17 18 21
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..24 23 21 20 17 16 14 14 14 14 15 15
20 FT WIND GUST.46 44 40 36 32 29 25 25 25 25 26 28
MIX HGT (KFT)...0.6 0.7 1.0 1.5 2.6 4.9 7.6 9.6 12 13 13 9.1
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.25 25 25 24 22 23 25 26 28 28 26 23
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/100015 18 24 35 53 107 175 228 280 308 300 212
SATURDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (20-30 PERCENT) THEN BECOMING
MOSTLY CLEAR (0-10 PERCENT). CHANCE OF SHOWERS
AND THUNDERSTORMS EARLY IN THE EVENING, THEN
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE
IN THE EVENING.
CWR.................11 PERCENT.
MIN TEMPERATURE.....AROUND 57.
MAX HUMIDITY........55 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 15 MPH SHIFTING TO THE
WEST 6 TO 8 MPH AFTER 3 AM. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS IN THE
EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 14 TO 23 MPH DECREASING TO 12 TO 13
MPH LATE IN THE EVENING, THEN SHIFTING TO THE
WEST 8 TO 13 MPH OVERNIGHT SHIFTING TO THE
SOUTHWEST AROUND 9 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....EXCELLENT (154100 KNOT-FT) EARLY IN THE EVENING
DECREASING TO VERY GOOD (124300 KNOT-FT) LATE
IN THE NIGHT DECREASING TO POOR (3400 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........43 56 57 55 43 42 19 11 3 7 8 6
WEATHER COV.....CHC CHC CHC SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........CHC CHC CHC SCH SCH SCH
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
TEMP............87 83 77 72 69 67 64 63 62 60 59 59
RH..............26 31 41 48 52 54 56 54 54 53 53 51
20 FT WIND DIR..SW SW SW SW SW SW SW SW W W W W
20 FT WIND SPD..15 14 13 12 10 8 7 7 7 8 8 8
20 FT WIND GUST.28 26 24 21 18 15 14 14 14 15 15 15
MIX HGT (KFT)...6.5 1.1 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.SW S SW SW W SW SW NW W W W SW
TRANSP WIND SPD.23 16 15 14 13 12 12 8 10 13 10 9
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/1000154 19 10 8 7 6 5 4 4 5 4 4
SUNDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................1 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........18 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 12 MPH SHIFTING TO THE SOUTH 9
TO 13 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......9700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 12 TO 21 MPH SHIFTING TO THE SOUTH
AROUND 21 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (5600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (93100 KNOT-FT) IN THE
AFTERNOON INCREASING TO VERY GOOD (114600
KNOT-FT) EARLY IN THE MORNING INCREASING TO
EXCELLENT (172700 KNOT-FT) IN THE AFTERNOON IN
THE AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 8 5 1 3 4 6 10 14 19 23 27
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............58 62 66 69 74 78 81 85 87 88 89 88
RH..............52 49 43 36 31 26 23 20 19 18 19 20
20 FT WIND DIR..W W W W W W W SW S S S S
20 FT WIND SPD..8 9 10 12 10 9 8 8 9 10 12 13
20 FT WIND GUST.15 17 20 21 20 17 15 16 17 20 22 24
MIX HGT (KFT)...0.5 0.6 1.0 1.8 3.3 5.1 6.7 8.2 9.3 9.7 9.5 8.6
TRANSP WIND DIR.W W W W W W SW SW SW SW S S
TRANSP WIND SPD.14 12 14 20 21 21 20 20 20 20 21 21
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10007 6 14 32 61 93 117 143 159 166 173 157
FORECASTER...ZAWISLAK
REQUESTED BY...DUELL PUTTERGILL
TYPE OF REQUEST...WILDFIRE
.TAG 2616294.0/CYS
.DELDT 06/26/26
.FORMATTERVERSION 2.0.0
.EMAIL DUELL.PUTTERGILL@USDA.GOV
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