279  
FNUS73 KFSD 101437  
FWSFSD  
 
SPOT FORECAST FOR GREENWOOD HAND PILE BURN...YANKTON AGENCY BIA  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
837 AM CST WED JAN 10 2018  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
TODAY WILL BE MILD WITH CLOUDY SKIES AND RELATIVELY HIGH HUMIDITY.  
SOUTHERLY WINDS WILL BE AROUND 10 MPH OR LESS. A FRONT MOVES  
THROUGH THE AREA THIS EVENING. LIGHT RAIN OR DRIZZLE WILL QUICKLY  
CHANGE OVER TO SNOW EARLY EVENING, WHILE NORTHERLY WINDS INCREASE  
RAPIDLY TO 25 TO 35 MPH WITH HIGHER GUSTS POSSIBLE. SNOW AND BLOWING  
SNOW WILL CONTINUE THROUGH THURSDAY MORNING. 1 TO 3 INCHES OF SNOW  
ACCUMULATION IS POSSIBLE. GUSTY WINDS WILL CONTINUE THROUGH THE DAY  
THURSDAY, WITH TEMPERATURES EXPECTED IN THE SINGLE DIGITS AND  
LOWER TEENS.  
   
REST OF TODAY
 
 
MAX TEMPERATURE.....44-49.  
MIN HUMIDITY........65 PERCENT.  
 
TIME (CST) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......MC MC MC MC MC MC CDY  
SKY (%).........57 58 65 72 80 86 89  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0  
TEMP............40 44 46 47 47 44 41  
DEWPOINT........33 35 36 36 36 36 34  
RH..............76 70 68 65 65 73 76  
20 FT WIND DIR..S S SSW SW W W NW  
20 FT WIND SPD..7 7 6 3 3 7 12  
20 FT WIND GUST. 15  
MIX HGT (KFT)...0.3 0.3 0.3 0.3 0.3 0.7 1.2  
TRANSP WIND DIR.S S SSW WSW W W NW  
TRANSP WIND SPD.8 8 6 3 5 12 21  
HAINES INDEX....4 4 4 4 4 3 3  
SMOKE DISPERSAL.PR PR PR PR PR PR FR  
   
TONIGHT
 
 
MIN TEMPERATURE.....4-9.  
MAX HUMIDITY........88 PERCENT.  
 
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY  
SKY (%).........94 97 97 95 95 96  
WEATHER COV.....CHANCE CHANCE DEFNTE DEFNTE DEFNTE DEFNTE  
WEATHER TYPE....RAIN RNSN SNOW SNOW SNOW SNOW  
TSTM COV........  
CHC OF PCPN (%).30 40 80 80 80 80  
TEMP............38 34 28 19 14 12  
DEWPOINT........33 28 22 15 11 7  
RH..............82 78 78 84 88 80  
20 FT WIND......NNW 15 NNW 22 NNW 28 NNW 30 NNW 28 NW 26  
20 FT WIND GUST.22 31 37 39 38 36  
MIX HGT (FT)....1700 1000 600 1200 1600 1900  
TRANSPORT WIND..NNW 28 NNW 29 NNW 33 NNW 43 NNW 41 NNW 39  
HAINES INDEX....2 2 2 2 2 2  
SMOKE DISPERSAL.GOOD FAIR FAIR GOOD GOOD GOOD  
   
THURSDAY
 
 
MAX TEMPERATURE.....8-13.  
MIN HUMIDITY........69 PERCENT.  
 
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......CLOUDY MCLDY MCLDY MCLDY PCLDY PCLDY  
SKY (%).........96 81 71 60 38 29  
WEATHER COV.....CHANCE CHANCE CHANCE PATCHY PATCHY PATCHY  
WEATHER TYPE....SNOW SNOW SNOW BLSNOW BLSNOW BLSNOW  
TSTM COV........  
CHC OF PCPN (%).30 30 30 0 0 0  
TEMP............10 7 6 8 11 9  
DEWPOINT........3 1 0 1 3 3  
RH..............73 76 76 72 69 76  
20 FT WIND......NW 28 NW 25 NW 25 NW 25 NW 23 NW 20  
20 FT WIND GUST.37 35 35 35 32 29  
MIX HGT (FT)....2000 2000 2200 2400 2400 1700  
TRANSPORT WIND..NNW 39 NNW 38 NNW 38 NW 37 NNW 35 NNW 30  
HAINES INDEX....2 2 2 2 2 2  
SMOKE DISPERSAL.GOOD GOOD EXCEL EXCEL EXCEL GOOD  
 

 
FORECASTER...HANKO  
REQUESTED BY...DAVID LACOMPTE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1800185.2/FSD  
 
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