409  
FNUS74 KJAN 191409  
FWSJAN  
 
SPOT FORECAST FOR SITE PREP #1 BNF...USFS  
NATIONAL WEATHER SERVICE JACKSON MS  
909 AM CDT TUE OCT 19 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON OCTOBER 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
AFTERNOON RELATIVE HUMIDITY VALUES WILL DROP TO AROUND 35 PERCENT  
TODAY, BUT 20 FOOT WIND SPEEDS SHOULD BE GENERALLY LESS THAN 10  
MPH. SOME LIGHT FOG CANNOT BE RULED OUT EARLY WEDNESDAY MORNING,  
BUT DENSE FOG IS NOT EXPECTED.  
 
   
REST OF TODAY
 
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLEAR MCLEAR PCLDY PCLDY  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............61 72 76 76  
RH..............63 44 39 40  
20 FT WIND DIR..SE SE SE SE  
20 FT WIND SPD..3 6 6 6  
20 FT WIND GUST.6 7 7  
MIX HGT (FT)....1300 3000 4100 3700  
MIX HGT (M).....400 910 1250 1130  
TRANSPORT WIND..SE 5 SE 6 SE 7 SE 7  
TRAN WIND (M/S).SE 2 SE 3 SE 3 SE 3  
   
TONIGHT
 
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......PCLDY PCLDY PCLDY PCLDY PCLDY MCLDY  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............70 62 59 57 57 57  
RH..............53 72 78 86 86 93  
20 FT WIND DIR..SE SE SE SE E E  
20 FT WIND SPD..5 3 3 1 1 1  
20 FT WIND GUST.7 4 6 4 4 4  
MIX HGT (FT)....1700 400 400 400 300 300  
MIX HGT (M).....520 120 120 120 90 90  
TRANSPORT WIND..SE 5 E 3 E 3 SE 3 SE 3 E 3  
TRAN WIND (M/S).SE 2 E 1 E 1 SE 1 SE 1 E 1  
   
WEDNESDAY
 
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLDY PCLDY MCLDY MCLDY MCLDY MCLDY  
WEATHER COV..... S CHC S CHC S CHC CHANCE CHANCE  
WEATHER TYPE....NONE RAIN RAIN RAIN RAIN RAIN  
TSTM COV........ S CHC S CHC  
TEMP............58 60 69 74 76 77  
RH..............93 96 78 74 69 69  
20 FT WIND DIR..E E SE SE SE SE  
20 FT WIND SPD..1 3 5 5 5 6  
20 FT WIND GUST.6 10 10 11 12 11  
MIX HGT (FT)....300 400 1200 1300 1600 1800  
MIX HGT (M).....90 120 370 400 490 550  
TRANSPORT WIND..E 3 E 5 SE 8 SE 8 SE 8 SE 9  
TRAN WIND (M/S).E 1 E 2 SE 4 SE 4 SE 4 SE 4  
 

 
FORECASTER...FENNER  
REQUESTED BY...WILLIAM HUDSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2119723.0/JAN  
.DELDT 10/19/21  
.EMAIL WILLIAM.HUDSON@USDA.GOV  
 
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