404  
FNUS73 KBIS 092256  
FWSBIS  
 
SPOT FORECAST FOR CHICKEN CREEK...USFS  
NATIONAL WEATHER SERVICE BISMARCK ND  
556 PM CDT WED SEP 9 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1800 CDT ON SEPTEMBER 09.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
..RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM CDT THURSDAY  
 
   
DISCUSSION  
 
PARTLY CLOUDY CONDITIONS ARE EXPECTED OVER THE BURNSITE AT THE  
START OF THE FORECAST PERIOD. MINIMUM RELATIVE HUMIDITY THIS  
AFTERNOON IS AROUND 25 PERCENT, BUT IS EXPECTED TO RECOVER  
OVERNIGHT TO A MAXIMUM OF AROUND 71 PERCENT. LOW TEMPERATURES  
TONIGHT ARE EXPECTED TO DROP AS LOW AS 50 PERCENT. BREEZY WEST  
WINDS THIS AFTERNOON ARE EXPECTED TO RAPIDLY DIMINISH THROUGH THE  
EARLY EVENING, BECOMING VERY LIGHT AND SOMEWHAT VARIABLE THROUGH  
THE EARLY OVERNIGHT PERIOD, BEFORE ORGANIZING OUT OF THE SOUTH  
AROUND 5 MPH AROUND 3 AM.  
 
MOSTLY SUNNY AND VERY DRY CONDITIONS ARE EXPECTED AT THE BURNSITE ON  
THURSDAY. HIGH TEMPERATURES THURSDAY AFTERNOON ARE FORECAST AROUND  
86 DEGREES, WITH MINIMUM RELATIVE HUMIDITY DROPPING AS LOW AS 17  
PERCENT. LIGHT SOUTH TO SOUTHWEST WINDS IN THE MORNING ARE  
EXPECTED TO STRENGTHEN THROUGH THE AFTERNOON, BECOMING SUSTAINED  
AROUND 15 TO 20 MPH AND GUSTING AS HIGH AS 25 MPH OUT OF THE WEST  
BY THE MID TO LATE AFTERNOON. A RED FLAG WARNING IS IN EFFECT AT  
THE BURNSITE THURSDAY AFTERNOON INTO THE EARLY EVENING (1 PM CDT  
THROUGH 9 PM CDT).  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF THUNDER...1 PERCENT.  
MIN TEMPERATURE.....AROUND 50.  
MAX HUMIDITY........71 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 7 TO 12 MPH EARLY IN THE EVENING  
BECOMING VERY LIGHT OUT OF THE SOUTHWEST INTO EARLY  
TONIGHT, BEFORE THEN TURNING OUT OF THE SOUTH  
AROUND 6 MPH AFTER 3 AM.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....WEST 12 TO 18 MPH SHIFTING TO THE SOUTHWEST 7  
TO 10 MPH IN THE LATE EVENING AND OVERNIGHT.  
SMOKE DISPERSAL.....VERY GOOD (105800 KNOT-FT) DECREASING TO POOR  
(2700 KNOT-FT) EARLY IN THE EVENING.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........10 6 5 9 10 11 6 6 9 7 6 5  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............77 74 70 65 62 60 58 56 55 54 52 53  
RH..............25 28 35 46 54 55 57 62 64 66 71 66  
20 FT WIND DIR..W W W W W SW SW SW SW S S S  
20 FT WIND SPD..12 11 7 5 4 3 4 4 4 5 6 6  
20 FT WIND GUST.15 12 7 6 7 8 8 9 10 11  
MIX HGT (KFT)...7.9 7.1 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5  
TRANSP WIND DIR.W W W W W W SW SW SW SW SW SW  
TRANSP WIND SPD.18 17 12 10 8 7 8 9 10 10 10 10  
DISPR KT-FT/1K..126 106 15 4 3 3 3 4 4 4 4 4  
   
THURSDAY  
 
SKY/WEATHER.........SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........17 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 TO 10 MPH INTO THE MORNING  
BECOMING 15 TO 20 MPH WITH GUSTS TO AROUND 25 MPH IN THE  
EARLY AFTERNOON, TURNING TO THE WEST THROUGH THE  
MID TO LATE AFTERNOON.  
MIXING HEIGHT.......6300 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH SHIFTING TO THE WEST 20  
TO 25 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (4500 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO VERY GOOD (114600 KNOT-FT) THROUGH  
THE AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........3 6 29 15 12 5 7 7 8 17 5 6  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............52 52 54 59 65 71 76 80 83 84 85 85  
RH..............66 63 55 47 40 31 26 22 19 18 17 17  
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW W W W  
20 FT WIND SPD..6 6 7 10 11 13 15 17 18 19 17 16  
20 FT WIND GUST.11 12 13 17 19 21 24 26 26 26 26 25  
MIX HGT (KFT)...0.5 0.5 0.5 0.6 1.0 1.5 3.3 4.7 5.5 5.9 6.3 6.2  
TRANSP WIND DIR.SW SW SW SW SW SW SW W W W W W  
TRANSP WIND SPD.12 12 12 14 16 20 22 24 24 25 24 23  
DISPR KT-FT/1K..5 5 5 7 13 26 63 100 115 124 132 124  
 
 
FORECASTER...ADAM  
REQUESTED BY...EDDIE HUTTON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2621545.0/BIS  
.DELDT 09/09/26  
.FORMATTERVERSION 2.0.0  
.EMAIL WBROYLES@YAHOO.COM  
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