455  
FNUS73 KFSD 071538  
FWSFSD  
 
SPOT FORECAST FOR RX SLASH PILE BURN...YANKTON AGENCY  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
938 AM CST THU DEC 7 2017  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
WEST WINDS WILL BE LIGHTER THAN RECENT DAYS, BUT WILL STILL RANGE  
FROM 10 TO 15 MPH TODAY. WINDS TURN NORTHWEST TONIGHT AND FRIDAY.  
WINDS WILL INCREASE TO 10 TO 20 MPH BY FRIDAY AFTERNOON WITH  
HIGHER GUSTS. CONDITIONS REMAIN DRY, WITH ONLY SOME SCATTERED  
FLURRIES POSSIBLE TONIGHT.  
   
REST OF TODAY
 
 
MAX TEMPERATURE.....27-32.  
MIN HUMIDITY........55 PERCENT.  
 
TIME (CST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......MCR MCR MCR MCR PC PC PC MC MC  
SKY (%).........8 12 15 22 29 39 48 58 64  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0  
TEMP............10 14 19 24 27 29 30 29 27  
DEWPOINT........4 7 10 12 14 16 18 20 20  
RH..............77 72 66 60 55 57 60 68 74  
20 FT WIND DIR..W W W W W W W W W  
20 FT WIND SPD..8 9 9 10 12 12 10 9 8  
20 FT WIND GUST.9 12 13 15 14 13 10  
MIX HGT (KFT)...0.4 0.9 1.4 1.9 2.0 2.1 2.2 2.2 1.2  
TRANSP WIND DIR.WNW WNW W W W W W W W  
TRANSP WIND SPD.13 14 16 18 20 21 20 16 12  
HAINES INDEX....4 4 5 5 5 5 5 5 4  
SMOKE DISPERSAL.PR PR FR FR FR GD GD FR PR  
   
TONIGHT
 
 
MIN TEMPERATURE.....21-26.  
MAX HUMIDITY........95 PERCENT.  
 
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLDY MCLDY MCLDY MCLDY CLOUDY CLOUDY  
SKY (%).........69 75 75 80 89 92  
WEATHER COV..... CHANCE CHANCE CHANCE  
WEATHER TYPE....NONE NONE NONE SNSHWR SNSHWR SNSHWR  
TSTM COV........  
CHC OF PCPN (%).0 0 0 10 10 10  
TEMP............25 24 26 27 28 28  
DEWPOINT........20 21 23 24 26 27  
RH..............82 86 88 88 92 93  
20 FT WIND......WSW 7 WSW 7 W 8 WNW 10 WNW 12 WNW 10  
20 FT WIND GUST. 13 15 13  
MIX HGT (FT)....300 300 300 300 300 300  
TRANSPORT WIND..WSW 8 W 7 W 9 WNW 12 WNW 13 WNW 13  
HAINES INDEX....4 3 3 3 2 2  
SMOKE DISPERSAL.POOR POOR POOR POOR POOR POOR  
   
FRIDAY
 
 
MAX TEMPERATURE.....35-40.  
MIN HUMIDITY........64 PERCENT.  
 
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLDY MCLDY MCLDY MCLDY MCLDY MCLDY  
SKY (%).........81 69 63 52 52 54  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).10 10 10 0 0 0  
TEMP............27 25 29 35 38 37  
DEWPOINT........26 24 26 26 27 27  
RH..............95 100 88 69 64 67  
20 FT WIND......WNW 10 NW 10 NW 14 NW 17 NW 18 NW 16  
20 FT WIND GUST.12 15 20 25 28 24  
MIX HGT (FT)....300 300 1000 2400 2400 2400  
TRANSPORT WIND..NW 12 NW 13 NW 18 NW 28 NW 33 NW 28  
HAINES INDEX....2 2 2 2 3 3  
SMOKE DISPERSAL.POOR POOR FAIR GOOD GOOD GOOD  
 

 
FORECASTER...HANKO  
REQUESTED BY...JULIAN REDBUFFALO  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1719703.0/FSD  
 
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