399  
FNUS72 KCHS 211049  
FWSCHS  
 
SPOT FORECAST FOR C198 WYDEN FMF...USFS  
NATIONAL WEATHER SERVICE CHARLESTON SC  
649 AM EDT SAT APR 21 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON APRIL 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
COOL AND DRY HIGH PRESSURE WILL PREVAIL INTO SUNDAY.  
 
FOG POTENTIAL FOR TONIGHT: VERY LOW.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 68.  
MIN HUMIDITY........45 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 5 TO 12 MPH, BECOMING EAST 12  
TO 18 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......MAX 4700 FT AGL.  
TRANSPORT WINDS.....EAST 6 TO 14 MPH INCREASING TO 15 TO 20 MPH IN  
THE AFTERNOON.  
MAX ADI.............46.  
INVERSION END.......0900.  
 
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......CLR CLR MCR MCR MCR MCR MCR MCR MCR MCR  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0  
TEMP............46 52 58 64 66 67 67 68 68 68  
RH..............89 74 62 50 47 47 47 45 45 47  
20 FT WIND DIR..NE NE E E E E E E E E  
20 FT WIND SPD..5 6 8 10 11 12 12 12 12 11  
20 FT WIND GUST.6 10 12 18 18 18 18 18 18 18  
MIX HGT (KFT)...0.6 1.8 3.1 4.3 4.5 4.6 4.7 4.6 4.4 4.3  
TRANSP WIND DIR.NE E E E E E E E E E  
TRANSP WIND SPD.6 14 14 14 16 16 16 16 16 16  
LVORI...........6 5 4 4 3 2 1 1 2 2  
ADI.............5 12 19 26 32 39 46 40 33 27  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 50.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........EAST WINDS 5 TO 11 MPH.  
MAX LVORI...........6.  
MIN ADI.............3.  
INVERSION BEGIN.....2000.  
 
TIME (EDT) 6 PM 10 PM 2 AM  
SKY COVER.......MCLEAR MCLEAR MCLEAR  
WEATHER TYPE....NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0  
TEMP............66 56 52  
RH..............50 77 93  
20 FT WIND......E 11G14 E 6G10 E 6  
MIX HGT (FT)....3100 700 600  
TRANSPORT WIND..E 14 E 8 E 6  
LVORI...........2 4 6  
ADI.............20 6 3  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING CLOUDY.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....AROUND 70.  
MIN HUMIDITY........57 PERCENT.  
WIND (20 FT)........EAST WINDS 6 TO 11 MPH.  
MIXING HEIGHT.......MAX 4300 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 6 MPH INCREASING TO 18 TO 20 MPH IN  
THE LATE MORNING AND AFTERNOON.  
MAX ADI.............56.  
INVERSION END.......0900.  
 
TIME (EDT) 6 AM 10 AM 2 PM  
SKY COVER.......PCLDY MCLDY MCLDY  
WEATHER TYPE....NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 10 10  
TEMP............51 64 68  
RH..............96 65 59  
20 FT WIND......E 6G10 E 9G12 E 10G18  
MIX HGT (FT)....700 2900 4300  
TRANSPORT WIND..E 6 E 18 E 20  
LVORI...........5 4 1  
ADI.............5 22 56  
 

 
FORECASTER...VISITOR  
REQUESTED BY...PAUL CHURCHILL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1807203.0/CHS  
.EMAIL PCHURCHILL@FS.FED.US  
 
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