256  
FNUS73 KFSD 291334  
FWSFSD  
 
SPOT FORECAST FOR GAHERTY...BUENA VISTA COUNTY CONSERVATION  
NATIONAL WEATHER SERVICE SIOUX FALLS SD  
834 AM CDT TUE APR 29 2025  
 
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
GUSTY WINDS THIS MORNING ARE EXPECTED TO DIMINISH THROUGH THE  
AFTERNOON. WIND DIRECTION WILL PRIMARILY BE NORTH-NORTHWEST, BUT  
COULD VARY BASED ON LOCAL TERRAIN EFFECTS. WINDS MAY ALSO BECOME  
MORE VARIABLE IN DIRECTION AS THE SPEEDS DROP OFF LATE THIS  
AFTERNOON. THE SLOWLY DECREASING WIND SPEEDS AS MIXING HEIGHTS  
RISE TO NEAR 5000 FT AGL WILL LEAD TO GOOD SMOKE DISPERSAL.  
   
REST OF TODAY  
 
MAX TEMPERATURE.....AROUND 62.  
MIN HUMIDITY........25 PERCENT.  
 
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......MCR MCR MCR CLR CLR CLR CLR CLR CLR  
SKY (%).........25 18 11 4 0 0 0 0 0  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0  
TEMP............42 45 48 52 55 58 60 61 62  
DEWPOINT........33 33 32 31 30 28 27 26 26  
RH..............70 63 54 44 38 31 28 26 25  
20 FT WIND DIR..NW NNW NNW NNW NNW NNW N NNW N  
20 FT WIND SPD..15 15 14 12 12 10 9 8 6  
20 FT WIND GUST.23 22 21 17 15 13 13 12 10  
MIX HGT (KFT)...2.1 2.2 2.8 3.2 3.6 4.0 4.7 4.9 5.1  
TRANSP WIND DIR.NNW N N N N N NNW NNW NW  
TRANSP WIND SPD.21 20 18 15 14 10 9 8 7  
SMOKE DISPERSAL.GD GD GD GD GD GD GD GD GD  
   
TONIGHT  
 
MIN TEMPERATURE.....AROUND 40.  
MAX HUMIDITY........84 PERCENT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY COVER.......CLR CLR CLR CLR CLR MCR PC MCR PC PC PC PC  
SKY (%).........0 2 3 4 4 15 26 22 28 26 40 41  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............61 60 57 52 49 47 45 43 42 41 41 41  
DEWPOINT........25 27 28 29 30 32 32 33 34 34 34 35  
RH..............25 28 33 41 48 56 60 67 73 76 77 80  
20 FT WIND DIR..N NNE ENE E E ESE ESE ESE SE SE SE SE  
20 FT WIND SPD..6 5 5 6 6 6 7 6 7 7 7 8  
20 FT WIND GUST.8 8 7 8 8 8 9 10 10 12 13 14  
MIX HGT (KFT)...4.9 4.3 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4  
TRANSP WIND DIR.NW NNW ENE E ESE SE SE SE SE SSE SSE SSE  
TRANSP WIND SPD.6 5 6 8 9 10 10 12 13 13 14 14  
SMOKE DISPERSAL.FR FR PR PR PR PR PR PR PR PR PR PR  
 
 
FORECASTER...JH  
REQUESTED BY...GREG JOHNSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2512157.0/FSD  
.DELDT 04/29/25  
.FORMATTERVERSION 2.0.0  
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