331  
FNUS73 KFSD 141247  
FWSFSD  
 
SPOT FORECAST FOR ELK LAKE RUDDICK...IOWA DNR  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
747 AM CDT WED APR 14 2021  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
LOWEST AFTERNOON HUMIDITY WILL END UP A BIT HIGHER THE NEXT  
COUPLE OF DAYS. WHILE IT WILL STILL BE BREEZY TODAY, WINDS WILL  
CONTINUE TO TREND DOWNWARD DAY TO DAY. MIXING DEPTH WILL INCREASE  
MODESTLY THROUGH THE DAY, YIELDING GOOD TO EXCELLENT SMOKE  
DISPERSAL FROM MID-MORNING ONWARD.  
 
TEMPERATURES REMAIN BELOW NORMAL THROUGH THE END OF THIS WEEK,  
AND AFTER A WARMER DAY SUNDAY, A STRONG COLD FRONT MONDAY WILL  
BRING STRONGER NORTHERLY WIND, ALONG WITH A CHANCE FOR MORE  
WIDESPREAD RAIN OR SNOW.  
   
REST OF TODAY
 
 
MAX TEMPERATURE.....45-50.  
MIN HUMIDITY........47 PERCENT.  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......CDY CDY CDY CDY CDY CDY MC MC MC MC  
SKY (%).........98 99 98 97 93 89 87 85 83 82  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0  
TEMP............31 32 34 37 40 43 44 45 46 48  
DEWPOINT........23 24 25 26 27 28 28 29 29 29  
RH..............72 72 69 64 59 55 53 53 51 47  
20 FT WIND DIR..NW NW NW NW NW NW NW NNW NNW NNW  
20 FT WIND SPD..17 16 17 17 18 18 18 20 20 18  
20 FT WIND GUST.26 24 26 26 26 26 28 26 26 26  
MIX HGT (KFT)...1.9 2.2 2.5 2.8 3.1 3.4 3.6 3.8 3.9 4.0  
TRANSP WIND DIR.NW NW NW NW NNW NNW NNW NNW NNW NNW  
TRANSP WIND SPD.20 21 22 22 21 21 22 22 23 23  
HAINES INDEX....2 2 2 2 2 2 2 3 3 3  
SMOKE DISPERSAL.FR GD GD GD GD GD GD EX EX EX  
   
TONIGHT
 
 
MIN TEMPERATURE.....28-33.  
MAX HUMIDITY........92 PERCENT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLDY MCLDY MCLDY MCLDY MCLDY MCLDY  
SKY (%).........80 80 83 67 67 84  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
TEMP............47 43 39 36 34 33  
DEWPOINT........29 29 30 30 30 29  
RH..............49 57 70 79 85 85  
20 FT WIND......NNW 16 NNW 14 NNW 12 NNW 10 NNW 12 NNW 12  
20 FT WIND GUST.24 20 15 13 15 15  
MIX HGT (FT)....4000 800 300 500 700 900  
TRANSPORT WIND..NNW 23 NNW 20 NNW 14 NNW 13 NNW 15 NNW 16  
HAINES INDEX....3 3 2 2 2 2  
SMOKE DISPERSAL.EXCEL POOR POOR POOR POOR POOR  
   
THURSDAY
 
 
MAX TEMPERATURE.....47-52.  
MIN HUMIDITY........52 PERCENT.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLDY MCLDY MCLDY MCLDY MCLDY PCLDY  
SKY (%).........87 85 77 67 54 39  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
TEMP............31 33 38 42 46 49  
DEWPOINT........29 29 30 31 31 32  
RH..............92 85 73 65 55 52  
20 FT WIND......NNW 12 NNW 13 N 14 NNW 13 NNW 13 N 14  
20 FT WIND GUST.14 16 20 17 17 18  
MIX HGT (FT)....800 1400 2500 2900 3300 3600  
TRANSPORT WIND..NNW 15 NNW 15 NNW 16 NNW 16 NNW 16 NNW 16  
HAINES INDEX....2 2 2 2 2 2  
SMOKE DISPERSAL.POOR FAIR GOOD GOOD GOOD GOOD  
 

 
FORECASTER...JH  
REQUESTED BY...TANNER VENTEICHER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2109023.0/FSD  
.DELDT 04/14/21  
.FORMATTERVERSION 1.0.25  
 
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