406  
FNUS73 KBIS 141811  
FWSBIS  
 
SPOT FORECAST FOR WUI-COMMUNITY RX BURN-FY...BIA-STANDING ROCK AGENCY  
NATIONAL WEATHER SERVICE BISMARCK ND  
957 AM CDT THU JUN 14 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON JUNE 14.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
EXPECT INCREASING SOUTHEASTERLY WINDS TODAY, SOMETIMES SUSTAINED  
WINDS MAY REACH ABOVE 20 MPH WITH SOME OCCASIONAL GUSTS OVER 25  
MPH. (THE HOURLY TABLE MAY NOT REFLECT THESE OCCASIONAL HIGHER  
WINDS.) ALSO EXPECTING AN INCREASE IN LOW LEVEL HUMIDITY, WITH  
SURFACE DEWPOINT TEMPERATURES AROUND 60F THIS MORNING INCREASING  
TO 66F OR HIGHER THROUGH THE AFTERNOON. THIS IS WHY THE MINIMUM  
RELATIVE HUMIDITY IS EXPECTED TO BE RATHER HIGH (AROUND 50  
PERCENT) DESPITE RELATIVELY HIGH TEMPS (MID 80S).  
 
LATE THIS AFTERNOON AND TONIGHT WE ARE EXPECTING  
THUNDERSTORMS...SOME SEVERE. THE LATEST THINKING IS THAT THE  
CHANCE FOR STORMS AT THE BURN SITE SHOULD NOT BEGIN UNTIL AROUND  
6PM CDT. YOU MAY SEE SOME STORM TOPS TO YOUR WEST AND NORTH LATE  
IN THE AFTERNOON, THEN STORMS ARE EXPECTED TO PROGRESS EASTWARD  
THIS EVENING AND INTO THE OVERNIGHT HOURS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 85.  
MIN HUMIDITY........50 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 8 TO 18 MPH.  
MIXING HEIGHT.......1800-3600 FT AGL INCREASING TO 4000-4200 FT AGL  
LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTH 17 TO 22 MPH.  
SMOKE DISPERSAL.....FAIR TO EXCELLENT (27600-62600 KNOT-FT).  
HAINES INDEX........2 TO 4 OR (VERY LOW) TO (LOW).  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........29 35 34 33 29 26 13 23  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0  
CHC OF PCPN (%).0 0 0 0 0 0 0 10  
LAL.............1 1 1 1 1 1 1 1  
TEMP............63 68 71 74 77 80 81 85  
RH..............87 76 71 66 60 58 58 54  
20 FT WIND DIR..SE SE SE SE SE SE SE SE  
20 FT WIND SPD..12 16 17 18 17 16 14 13  
20 FT WIND GUST.14 20 23 24 23 20 18 15  
MIX HGT (KFT)...1.8 2.4 2.9 3.3 3.4 3.6 4.0 4.2  
TRANSP WIND DIR.SE SE SE SE SE S S S  
TRANSP WIND SPD.17 17 21 22 21 18 17 17  
HAINES INDEX....4 4 4 4 3 3 2 2  
SDSPL KT-FT/100028 36 52 63 62 58 60 62  
 

 
FORECASTER...VINING  
REQUESTED BY...JAMES CONDON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1811482.0/BIS  
.DELDT 06/14/18  
.EMAIL JAMES.CONDON@BIA.GOV  
 
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