180
FNUS75 KCYS 101123
FWSCYS
SPOT FORECAST FOR SOUTH FORK...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
523 AM MDT WED JUN 10 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING
DISCUSSION
A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM
THIS EVENING FOR THE NORTHERN NEBRASKA PANHANDLE, INCLUDING THE
WILDFIRE AREA. WINDS HAVE SUBSIDED EARLY THIS MORNING AFTER A
WINDY TUESDAY EVENING, BUT ARE FORECAST TO QUICKLY INCREASE LATER
THIS MORNING AND CONTINUE THROUGH THIS AFTERNOON. WIND DIRECTION
IS EXPECTED TO SHIFT INTO THE NORTHWEST AROUND SUNSET LATE THIS
EVENING WITH WIND SPEEDS REMAINING GUSTY THROUGH MIDNIGHT. DRY
CONDITIONS ARE EXPECTED OVER THE NEXT 24 HOURS WITH MINIMAL CHANCES
FOR PRECIPITATION.
TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....80 TO 85 DEGREES.
MIN HUMIDITY........9 TO 15 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35
MPH INCREASING TO 20 TO 26 MPH WITH GUSTS TO
AROUND 40 MPH IN THE AFTERNOON.
MIXING HEIGHT.......10200 FT AGL INCREASING TO 13100 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....WEST 17 TO 25 MPH INCREASING TO 28 TO 37 MPH IN
THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....EXCELLENT (328700 KNOT-FT).
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........8 8 8 3 3 3 5 5 5 22 22 22
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............53 56 59 61 67 69 71 74 77 79 79 80
RH..............53 46 39 33 25 21 18 16 14 12 12 12
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..12 12 12 13 15 16 17 18 20 20 21 21
20 FT WIND GUST.20 20 23 25 29 31 33 36 37 38 39 40
MIX HGT (KFT)...0.8 1.4 3.9 5.6 7.4 8.9 10 11 12 12 13 13
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.17 18 23 25 28 29 32 35 35 35 37 37
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/100012 27 77 129 182 232 296 329 367 381 414 422
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40 TO 55 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 46 DEGREES.
MAX HUMIDITY........55 TO 70 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 15 TO 21 MPH WITH GUSTS UP TO
40 MPH DECREASING TO 10 TO 15 MPH LATE
IN THE EVENING AND OVERNIGHT.
MIXING HEIGHT.......6600 FT AGL DECREASING TO 700 FT AGL EARLY IN
THE EVENING.
TRANSPORT WINDS.....WEST 29 TO 36 MPH BECOMING NORTHWEST 20 TO 21
MPH.
SMOKE DISPERSAL.....EXCELLENT (357800 KNOT-FT) DECREASING TO FAIR
(11000 KNOT-FT) AFTER MIDNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........43 43 43 62 62 62 63 63 63 31 31 31
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............80 78 73 66 63 59 56 54 52 49 47 47
RH..............12 14 17 24 29 34 42 46 49 55 58 59
20 FT WIND DIR..W W NW NW NW N N N NW NW NW NW
20 FT WIND SPD..21 21 20 17 16 15 14 13 13 13 13 13
20 FT WIND GUST.37 36 35 32 30 26 25 24 23 23 23 23
MIX HGT (KFT)...12 6.6 1.4 1.5 1.3 0.8 1.4 1.3 0.8 1.1 1.0 0.7
TRANSP WIND DIR.W W W NW NW N N N NW NW NW NW
TRANSP WIND SPD.36 29 22 21 20 20 21 21 20 20 20 20
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/1000382 181 28 28 24 15 26 24 14 20 18 20
THURSDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....70 TO 75 DEGREES.
MIN HUMIDITY........20 TO 25 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 12 TO 21 MPH. GUSTS UP TO 32
MPH INCREASING TO 40 MPH IN THE LATE MORNING
AND AFTERNOON, THEN DECREASING TO 30 MPH LATE
IN THE AFTERNOON.
MIXING HEIGHT.......7300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 20 TO 28 MPH INCREASING TO 23 TO 32
MPH IN THE LATE MORNING AND AFTERNOON, THEN
DECREASING TO AROUND 22 MPH LATE IN THE
AFTERNOON.
SMOKE DISPERSAL.....EXCELLENT (193900 KNOT-FT).
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........12 12 12 18 18 18 23 23 23 20 20 20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............46 48 51 54 60 62 63 65 67 69 70 71
RH..............61 57 51 47 39 36 35 32 28 26 24 24
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..14 15 16 18 20 21 21 21 18 17 16 15
20 FT WIND GUST.24 26 32 36 38 40 40 39 36 33 31 29
MIX HGT (KFT)...1.1 2.6 4.1 5.2 6.0 6.7 6.8 6.9 7.1 7.2 7.0 7.3
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW NW
TRANSP WIND SPD.20 22 28 30 30 32 32 30 28 26 23 22
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/100020 52 99 137 161 188 194 181 175 174 141 141
REQUESTED BY...RYAN FLYNN
TYPE OF REQUEST...WILDFIRE
.TAG 2615284.0/CYS
.DELDT 06/10/26
.FORMATTERVERSION 2.0.0
.EMAIL BRANDON.WRIGHT@USDA.GOV,SDGPC@FIRENET.GOV
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