776  
FNUS73 KFSD 080930  
FWSFSD  
 
SPOT FORECAST FOR STONE SP SE UNIT...IOWA DEPARTMENT OF NATURAL RESOURCES  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
430 AM CDT TUE JUN 8 2021  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
EXPECT QUIET CONDITIONS AND SE TO SSE WINDS TO PREVAIL TODAY,  
WITH GUSTS BETWEEN 15 TO 18 MPH POSSIBLE THIS AFTERNOON. MUCH LIKE  
THE PAST FEW DAYS, LOOK FOR DRY CONDITIONS TO CONTINUE, WITH THE  
NEXT BEST CHANCE FOR SEEING WIDESPREAD SHOWERS AND STORMS  
OCCURRING THURSDAY NIGHT INTO FRIDAY. OTHERWISE, EXPECT ABOVE  
NORMAL TEMPERATURES TO PREVAIL THROUGHOUT THE WEEK, WITH MINIMUM  
RH VALUES OVER THE NEXT SEVERAL DAYS FORECAST TO REMAIN BETWEEN 30  
TO 40 PERCENT.  
 
WE ENCOURAGE YOU TO DETERMINE THE LOCAL GREENNESS BEFORE ANY  
BURNS, AS SOME LOCATIONS MAY BE DRIER THAN OTHERS WHICH COULD  
POSE A LOCALIZED ENHANCED FIRE RISK.  
   
REST OF TODAY
 
 
MAX TEMPERATURE.....89-94.  
MIN HUMIDITY........36 PERCENT.  
 
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......CLR MCR MCR MCR PC PC PC PC MCR  
SKY (%).........4 6 12 19 26 26 26 26 20  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0  
TEMP............78 82 85 87 88 90 90 92 91  
DEWPOINT........66 66 64 63 63 62 62 61 61  
RH..............67 58 50 45 43 39 39 36 37  
20 FT WIND DIR..SSE SSE SSE SSE SSE SSE SSE SSE SSE  
20 FT WIND SPD..8 8 9 10 12 12 12 12 12  
20 FT WIND GUST.10 10 13 15 17 17 17 17 17  
MIX HGT (KFT)...1.2 3.1 4.7 5.5 6.0 6.2 6.6 6.7 6.8  
TRANSP WIND DIR.S SSE SSE SSE SSE SSE SSE SE SE  
TRANSP WIND SPD.3 6 7 8 12 14 13 14 14  
HAINES INDEX....4 4 4 4 3 3 3 3 3  
SMOKE DISPERSAL.PR FR FR GD GD EX EX EX EX  
   
TONIGHT
 
 
MIN TEMPERATURE.....65-70.  
MAX HUMIDITY........81 PERCENT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLEAR MCLEAR CLEAR CLEAR CLEAR MCLEAR  
SKY (%).........14 7 4 5 5 6  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
TEMP............91 88 79 76 71 69  
DEWPOINT........61 61 62 62 62 63  
RH..............37 40 56 62 73 81  
20 FT WIND......SSE 12 SSE 9 SE 8 SSE 7 SSE 7 SSE 6  
20 FT WIND GUST.16 14 12 12 10 8  
MIX HGT (FT)....6400 1500 500 500 500 300  
TRANSPORT WIND..SSE 13 SSE 10 SE 6 S 9 SSE 8 SSE 5  
HAINES INDEX....3 4 4 4 4 4  
SMOKE DISPERSAL.EXCEL FAIR POOR POOR POOR POOR  
   
WEDNESDAY
 
 
MAX TEMPERATURE.....90-95.  
MIN HUMIDITY........36 PERCENT.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR  
SKY (%).........13 15 11 16 16 10  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 10 10  
TEMP............69 73 82 87 88 91  
DEWPOINT........63 65 66 65 63 61  
RH..............81 76 58 48 43 37  
20 FT WIND......SE 6 SSE 7 SSE 9 SSE 10 SSE 10 SSE 9  
20 FT WIND GUST.7 8 12 15 16 14  
MIX HGT (FT)....300 1000 3200 4500 5500 6100  
TRANSPORT WIND..SSE 3 SE 3 S 10 SE 15 SSE 13 S 6  
HAINES INDEX....4 3 3 3 3 3  
SMOKE DISPERSAL.POOR POOR FAIR GOOD EXCEL GOOD  
 

 
FORECASTER...SSC  
REQUESTED BY...MATTHEW SHANKLIN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2113751.0/FSD  
.DELDT 06/08/21  
.FORMATTERVERSION 1.0.25  
 
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