455  
FNUS72 KCHS 100915  
FWSCHS  
 
SPOT FORECAST FOR C47 RX...USDA  
NATIONAL WEATHER SERVICE CHARLESTON SC  
515 AM EDT SAT APR 10 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 10.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
UNSETTLED WEATHER IS EXPECTED ACROSS THE REGION UNTIL A COLD  
FRONT MOVES THROUGH SUNDAY NIGHT. SOME THUNDERSTORMS THIS AFTERNOON AND  
EVENING WILL BE STRONG OR PERHAPS MARGINALLY SEVERE BETWEEN 3 AND 8 PM.  
 
FOG POTENTIAL FOR TONIGHT: LOW.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS LATE IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....AROUND 81.  
MIN HUMIDITY........54 PERCENT.  
WIND (20 FT)........SOUTH WINDS 6 TO 12 MPH INCREASING TO 13 TO 19 MPH  
WITH GUSTS AROUND 25 MPH THIS AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER 4  
OR 5 PM.  
MIXING HEIGHT.......MAX 5300 FT AGL.  
TRANSPORT WINDS.....SOUTH 15 TO 24 MPH.  
MAX ADI.............70.  
INVERSION END.......1000.  
 
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........63 62 59 55 52 54 59 64  
WEATHER TYPE.... RW  
TSTM COV........ SCH  
CHC OF PCPN (%).10 10 10 0 10 10 10 20  
TEMP............72 75 78 80 80 81 80 77  
RH..............76 69 62 58 56 54 54 60  
20 FT WIND DIR..S S S S S S S S  
20 FT WIND SPD..6 9 11 13 16 16 16 15  
20 FT WIND GUST.9 11 18 22 23 23 23 23  
MIX HGT (KFT)...2.5 3.7 4.2 4.8 5.3 4.8 4.4 3.9  
TRANSP WIND DIR.S S S S S S S S  
TRANSP WIND SPD.14 14 20 20 20 24 24 24  
LVORI...........3 1 1 1 1 1 1 1  
ADI.............25 43 52 59 65 66 70 66  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS IN THE  
EVENING. CHANCE OF SHOWERS THROUGH THE NIGHT.  
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT.  
CHANCE OF PCPN......50 PERCENT.  
MIN TEMPERATURE.....AROUND 60.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........SOUTH WINDS 12 TO 24 MPH WITH GUSTS TO AROUND  
22 MPH EARLY IN THE EVENING DECREASING TO 6 TO  
11 MPH, THEN SHIFTING TO THE SOUTHWEST AROUND 5  
MPH OVERNIGHT BECOMING LIGHT. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS IN THE  
EVENING.  
MAX LVORI...........8.  
MIN ADI.............3.  
INVERSION BEGIN.....2000.  
 
TIME (EDT) 6 PM 10 PM 2 AM  
SKY (%).........75 97 69  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR  
TSTM COV........S CHC CHANCE S CHC  
CHC OF PCPN (%).20 40 30  
TEMP............74 66 64  
RH..............66 90 93  
20 FT WIND......S 13G22 S 8G11 SW 5G7  
MIX HGT (FT)....2800 600 600  
TRANSPORT WIND..S 18 S 10 SW 6  
LVORI...........3 5 6  
ADI.............29 8 4  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS EARLY IN THE MORNING. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE  
MORNING, THEN CHANCE OF SHOWERS AND  
THUNDERSTORMS LATE IN THE AFTERNOON.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 80.  
MIN HUMIDITY........51 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 9 MPH.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS.  
MIXING HEIGHT.......MAX 4400 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 14 MPH INCREASING TO AROUND 16  
MPH LATE IN THE AFTERNOON.  
MAX ADI.............63.  
INVERSION END.......0900.  
 
TIME (EDT) 6 AM 10 AM 2 PM  
SKY (%).........57 51 37  
WEATHER TYPE....RNSHWR NONE RNSHWR  
TSTM COV........S CHC S CHC  
CHC OF PCPN (%).20 10 20  
TEMP............61 70 79  
RH..............97 78 54  
20 FT WIND......SW 4G5 SW 8G11 SW 8G11  
MIX HGT (FT)....500 1700 4400  
TRANSPORT WIND..SW 6 SW 14 SW 14  
LVORI...........8 3 1  
ADI.............4 27 58  
 

 
FORECASTER...33  
REQUESTED BY...PAUL CHURCHILL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2108502.0/CHS  
.DELDT 04/10/21  
.FORMATTERVERSION 2.0.0  
.EMAIL PAUL.CHURCHILL@USDA.GOV  
 
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