237  
FNUS72 KCHS 201156  
FWSCHS  
 
SPOT FORECAST FOR ABLE CONSTRUCTION FIRE...USCG/ EPA  
NATIONAL WEATHER SERVICE CHARLESTON SC  
756 AM EDT TUE AUG 20 2019  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 EDT ON AUGUST 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
ATLANTIC HIGH PRESSURE AND AN INLAND TROUGH WILL PREVAIL UNTIL  
LATE WEEK WHEN A COLD FRONT POSSIBLY AFFECTS THE AREA.  
 
FOG POTENTIAL FOR TONIGHT: LOW  
   
WEDNESDAY
 
 
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS EARLY IN THE MORNING. CHANCE OF  
SHOWERS AND THUNDERSTORMS LATE IN THE MORNING.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 91.  
MIN HUMIDITY........56 PERCENT.  
MAX APPARENT TEMP...101.  
SURFACE WINDS.......LIGHT WINDS BECOMING SOUTH AROUND 6 MPH IN THE  
AFTERNOON.  
MIXING HEIGHT.......MAX 6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST 6 TO 8 MPH IN  
THE LATE MORNING AND AFTERNOON.  
PCPN AMOUNT.........0.02 INCHES.  
INVERSION END.......0900  
 
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........51 46 50 53 55 58 59 60 61 60 59  
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW  
TSTM COV........ SCH SCH SCH CHC CHC CHC CHC CHC CHC CHC  
CHC OF PCPN (%).10 20 20 20 30 30 30 30 30 30 30  
TEMP............75 77 80 83 86 88 90 91 91 91 89  
RH..............97 94 85 77 70 63 60 56 56 58 61  
APARNT TMP (F)..75 77 85 90 95 97 99 100 100 101 98  
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW S S  
SURFACE WND SPD.3 3 3 3 4 4 6 6 6 6 6  
SURFACE WND GST.4 4 4 4  
MIX HGT (KFT)...0.4 0.5 1.3 2.1 3.0 4.0 5.0 6.0 5.7 5.3 5.0  
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW  
TRANSP WIND SPD.4 4 6 6 6 6 6 6 8 8 8  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
CHANCE OF SHOWERS AND THUNDERSTORMS.  
CHANCE OF PCPN......30 PERCENT.  
MIN TEMPERATURE.....AROUND 74.  
MAX HUMIDITY........100 PERCENT.  
MAX APPARENT TEMP...95.  
SURFACE WINDS.......SOUTH WINDS AROUND 6 MPH EARLY IN THE EVENING  
BECOMING LIGHT.  
PCPN AMOUNT.........0.03 INCHES.  
INVERSION BEGIN.....2000  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........57 55 52 50 47 45 43 42 41 42 44 46  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
CHC OF PCPN (%).30 30 30 30 30 30 30 30 30 30 30 30  
TEMP............87 84 82 80 79 78 77 77 76 76 75 75  
RH..............65 74 79 85 88 91 94 94 97 94 97 97  
APARNT TMP (F)..95 92 89 85 79 78 77 77 76 76 75 75  
SURFACE WND DIR.S S S S S S S S SW SW SW SW  
SURFACE WND SPD.6 6 6 4 4 4 4 4 4 4 3 3  
SURFACE WND GST. 4 4  
MIX HGT (KFT)...3.6 2.2 0.8 0.7 0.6 0.5 0.4 0.4 0.3 0.3 0.3 0.2  
TRANSP WIND DIR.S S S S S S SW SW SW SW SW SW  
TRANSP WIND SPD.8 8 8 6 6 6 4 4 4 4 4 4  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 92.  
MIN HUMIDITY........54 PERCENT.  
MAX APPARENT TEMP...101.  
SURFACE WINDS.......LIGHT WINDS BECOMING SOUTH 6 TO 7 MPH EARLY IN  
THE AFTERNOON.  
MIXING HEIGHT.......MAX 6100 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST 8 TO 10 MPH IN  
THE LATE MORNING AND AFTERNOON.  
PCPN AMOUNT.........0.06 INCHES.  
INVERSION END.......0900  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........48 49 48 44 40 39 44 51 57 58 57 56  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
CHC OF PCPN (%).30 30 30 30 30 30 30 30 30 30 30 30  
TEMP............74 74 76 79 82 86 88 90 91 92 91 90  
RH..............100 100 97 88 79 70 63 60 58 54 56 60  
APARNT TMP (F)..74 74 76 79 89 95 97 99 101 101 100 99  
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW S S S  
SURFACE WND SPD.3 3 3 4 4 4 4 4 6 6 6 7  
SURFACE WND GST.4 4 4 6 8  
MIX HGT (KFT)...0.3 0.3 0.3 1.7 3.1 4.5 5.0 5.5 6.1 6.1 6.0 6.0  
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW S S S  
TRANSP WIND SPD.4 4 4 8 8 8 8 8 8 10 10 10  
 
HOURLY WIND FORECAST FOR THURSDAY NIGHT THROUGH FRIDAY NIGHT IS DISPLAYED  
ON HTTPS://GO.USA.GOV/XVYJK  
 

 
FORECASTER...DIXON  
REQUESTED BY...SUBASH PATEL  
TYPE OF REQUEST...HAZMAT  
.TAG 1913958.3/CHS  
.DELDT 08/20/19  
.EMAIL PATEL.SUBASH@EPA.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SC Page
The Nexlab GA Page Main Text Page