241
FNUS75 KCYS 141513
FWSCYS
SPOT FORECAST FOR CHADRON FIRE...CHADRON FIRE
NATIONAL WEATHER SERVICE CHEYENNE WY
913 AM MDT THU MAY 14 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
..RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT FRIDAY
DISCUSSION
HIGH BASED CLOUDS WILL BE PUSHING THROUGH THIS MORNING TO ALLOW FULL SUN BY THE AFTERNOON. WITH THE RH BEING
BELOW 10 PERCENT EXPECTED THE RADIANT SUN WILL ONLY ENHANCE THE SUSCEPTABILITY TO THE FUELS BURNING. WINDS WILL BE FROM
THE NORTHWEST BETWEEN 290 AND 310 DEGREES WITH THE WINDS CHANGING TO THE WEST BY THIS AFTERNOON. THERE IS A SLIGHT 700MB JET
TO AIDE IN SMOKE DISPERSAL BUT THAT ALSO MEANS GUSTY WINDS AROUND 30-40 MPH BY THIS AFTERNOON AS THE DEEPER DIURNAL MIXING OCCURS.
AROUND 9PM AND LATER WINDS ARE EXPECTED TO BE LIGHT AND VARIABLE AT AROUND 5 MPH WHICH MAY HELP CONTAINMENT INTO THE OVERNIGHT HOURS
IF NEEDED. NO RAIN IS EXPECTED TODAY TO HELP WITH ANY POSSIBLE CONTAINMENT.
REST OF TODAY
SKY/WEATHER.........SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........9 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 14 TO 17 MPH.
MIXING HEIGHT.......11900 FT AGL.
TRANSPORT WINDS.....WEST 21 TO 28 MPH.
SMOKE DISPERSAL.....GOOD (63600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (150100 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (192100
KNOT-FT) LATE IN THE AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........39 27 32 11 14 10 9 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
TEMP............72 73 73 76 78 79 80 81
RH..............24 22 20 17 14 12 11 9
20 FT WIND DIR..W NW NW NW W W W NW
20 FT WIND SPD..17 16 15 14 14 14 15 15
20 FT WIND GUST.32 30 26 25 25 25 28 29
MIX HGT (KFT)...3.5 4.6 5.4 6.7 7.9 9.6 11 12
TRANSP WIND DIR.NW NW NW W W W W W
TRANSP WIND SPD.21 21 22 22 22 23 26 28
HAINES INDEX....M M M M M M M M
SDSPL KT-FT/100064 83 103 127 150 192 258 287
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 47.
MAX HUMIDITY........35 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 15 MPH DECREASING TO
AROUND 5 MPH IN THE LATE EVENING AND OVERNIGHT,
THEN BECOMING LIGHT OVERNIGHT BECOMING WEST
AROUND 5 MPH AFTER 3 AM.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....WEST AROUND 23 MPH BECOMING NORTH 8 TO 14 MPH
EARLY IN THE EVENING, THEN SHIFTING TO THE EAST
7 TO 9 MPH LATE IN THE EVENING SHIFTING TO THE
SOUTHEAST 8 TO 9 MPH OVERNIGHT SHIFTING TO THE
SOUTH 9 TO 10 MPH.
SMOKE DISPERSAL.....EXCELLENT (190500 KNOT-FT) DECREASING TO POOR
(2900 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........17 21 12 9 7 4 4 4 5 4 4 3
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............80 76 72 63 59 57 56 54 53 50 50 50
RH..............9 11 13 18 22 24 26 28 29 33 33 33
20 FT WIND DIR..NW NW NW NW NW NW W W W W W W
20 FT WIND SPD..15 12 9 7 5 5 5 5 3 3 5 5
20 FT WIND GUST.28 23 17 12 9 8 8 8 8 8 8 8
MIX HGT (KFT)...9.5 0.7 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.5 0.4 0.4
TRANSP WIND DIR.W N N NE E E E SE S S S SW
TRANSP WIND SPD.23 14 8 7 8 9 9 8 9 10 9 9
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/1000191 8 4 3 4 4 4 3 4 4 3 3
FRIDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........10 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 13 MPH.
MIXING HEIGHT.......9700 FT AGL INCREASING TO 12000 FT AGL LATE IN
THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH INCREASING TO WEST 20 TO
24 MPH.
SMOKE DISPERSAL.....POOR (3200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (78700 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (183700
KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........6 7 3 2 1 3 2 5 9 11 21 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............48 53 57 62 70 72 73 77 79 80 81 80
RH..............35 31 28 24 18 16 15 13 11 11 10 10
20 FT WIND DIR..W W W W W W W W W W W NW
20 FT WIND SPD..5 6 6 7 7 8 9 10 12 12 12 13
20 FT WIND GUST.9 10 10 12 14 15 17 18 21 22 23 24
MIX HGT (KFT)...0.5 0.5 1.4 2.6 4.0 6.1 8.1 9.7 11 12 12 11
TRANSP WIND DIR.SW NW NW NW W W W W W W W W
TRANSP WIND SPD.8 8 10 12 12 15 20 22 23 24 22 20
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10003 3 13 26 40 79 138 184 217 253 222 184
FORECASTER...MCLAUGHLIN
REQUESTED BY...CHADRON DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 2613645.0/CYS
.DELDT 05/14/26
.FORMATTERVERSION 2.0.0
.EMAIL SDREIER@CHADRONPD.COM,COORDINATOR@REGION23EM.ORG
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