819
FNUS75 KCYS 191106
FWSCYS
SPOT FORECAST FOR CHADRON CREEK RX...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE CHEYENNE WY
506 AM MDT THU MAR 19 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
..RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT SATURDAY
DISCUSSION
CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE THIS
AFTERNOON WITH VERY LOW RELATIVE HUMIDITIES IN THE AFTERNOON FOR
THIS TIME OF THE YEAR. WESTERLY WINDS WILL BECOME GUSTY IN THE
AFTERNOON WITH OCCASIONAL GUSTS UP TO 25 MPH. SIMILAR WEATHER IS
EXPECTED FOR FRIDAY WITH LIGHTER WINDS.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 80 DEGREES.
MIN HUMIDITY........9 TO 14 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH EARLY IN THE MORNING
BECOMING WEST 5 TO 15 MPH IN THE LATE MORNING AND
AFTERNOON. GUSTS UP TO 25 MPH.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 20 MPH INCREASING TO 20 TO 25 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3300 KNOT-FT) INCREASING TO GOOD
(99200 KNOT-FT) IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........15 15 15 22 22 22 25 25 25 20 20 20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............45 43 48 53 61 66 70 74 77 78 79 80
RH..............51 57 47 39 31 25 22 17 14 13 12 12
20 FT WIND DIR..W W W W W W W W W W W NW
20 FT WIND SPD..5 5 3 5 6 8 10 10 10 10 10 9
20 FT WIND GUST.9 8 8 8 12 16 20 21 21 20 18 17
MIX HGT (KFT)...0.3 0.3 0.3 0.4 1.1 2.0 2.7 4.4 5.5 6.5 6.4 5.1
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.13 13 12 10 10 14 17 20 21 22 22 21
SDSPL KT-FT/10004 4 3 3 10 24 41 75 99 123 121 92
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....45 TO 50 DEGREES.
MAX HUMIDITY........40 TO 55 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 8 MPH.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 12 MPH.
SMOKE DISPERSAL.....POOR (1700 KNOT-FT).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........17 17 17 26 26 26 22 22 22 26 26 26
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............78 73 68 63 60 57 55 54 52 50 49 49
RH..............13 16 19 23 27 30 34 35 38 41 42 40
20 FT WIND DIR..NW NW W W W W W W W W W W
20 FT WIND SPD..8 7 7 7 7 7 6 6 6 6 6 6
20 FT WIND GUST.16 15 14 13 13 12 12 10 10 10 10 10
MIX HGT (KFT)...0.6 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2 0.3 0.3
TRANSP WIND DIR.W NW W W W W W W W W NW W
TRANSP WIND SPD.10 8 10 12 10 10 10 9 9 8 9 12
SDSPL KT-FT/10005 3 3 3 3 3 3 2 2 2 2 3
FRIDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....78 TO 83 DEGREES.
MIN HUMIDITY........12 TO 18 PERCENT.
WIND (20 FT)........WEST WINDS 4 TO 8 MPH BECOMING LIGHT AND
VARIABLE IN THE AFTERNOON.
MIXING HEIGHT.......6600 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 16 MPH INCREASING TO 9 TO 18 MPH LATE
IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (99000 KNOT-FT) IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........27 27 27 24 24 24 9 9 9 14 14 14
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............47 49 52 56 63 69 73 75 77 80 79 78
RH..............45 42 39 34 27 23 20 19 18 16 17 16
20 FT WIND DIR..W W W W W W W W W W NW NW
20 FT WIND SPD..6 6 7 7 7 7 7 7 7 6 5 3
20 FT WIND GUST.10 10 12 13 14 15 15 16 17 16 15 13
MIX HGT (KFT)...0.3 0.3 0.2 0.3 1.0 2.1 3.3 4.9 6.2 6.6 5.0 2.7
TRANSP WIND DIR.W W W W W NW NW NW W W W W
TRANSP WIND SPD.10 9 8 8 9 12 14 16 18 18 14 9
SDSPL KT-FT/10003 2 1 2 8 21 40 68 99 105 60 21
REQUESTED BY...BEN JECH
TYPE OF REQUEST...PRESCRIBED
.TAG 2605170.4/CYS
.DELDT 03/19/26
.FORMATTERVERSION 2.0.0
.EMAIL BENJAMIN.J.JECH@USDA.GOV
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