733  
FNUS72 KGSP 221124  
FWSGSP  
 
SPOT FORECAST FOR BLACKWELLS BRIDGE...USFS  
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC  
624 AM EST WED JAN 22 2020  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 EST ON JANUARY 22.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
SLOWLY MODERATING CANADIAN HIGH PRESSURE WILL REMAIN OVER THE AREA  
THROUGH THURSDAY. A COLD FRONT WILL CROSS THE AREA FRIDAY NIGHT  
BRINGING MAINLY RAIN. SEASONAL HIGH PRESSURE SLOWLY BUILDS THROUGH  
NEXT WEEK.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT) THEN BECOMING MOSTLY  
SUNNY (35-45 PERCENT).  
MAX TEMPERATURE.....AROUND 47.  
MIN HUMIDITY........21 PERCENT.  
WIND (20 FT)........EAST WINDS 5 TO 6 MPH IN THE LATE MORNING AND  
EARLY AFTERNOON BECOMING LIGHT.  
MIXING HEIGHT.......2600 FT AGL.  
TRANSPORT WINDS.....EAST 9 TO 17 MPH DECREASING TO AROUND 7 MPH  
LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11000 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (26300 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............2.  
ADI.................26.  
STABILITY CLASS.....2.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........21000.  
VISIBILITY (SM).....10.  
SFC PRESSURE (IN)...28.66.  
 
TIME (EST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........9 29 33 54 51 47 32 21  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............33 37 41 44 46 47 47 44  
DEWPOINT........11 11 10 10 9 10 10 12  
RH..............39 32 27 24 22 21 22 26  
20 FT WIND DIR..NE E E E E E E E  
20 FT WIND SPD..5 5 5 5 4 4 3 3  
20 FT WIND GUST.7 7 7 6 6 5 4  
MIX HGT (KFT)...1.1 1.5 2.0 2.4 2.5 2.5 2.6 1.8  
TRANSP WIND DIR.E E E E E E E E  
TRANSP WIND SPD.16 17 15 13 12 10 9 7  
LVORI...........2 1 1 1 1 1 1 2  
ADI.............21 34 36 35 33 30 30 16  
VRATE KT-FT/100015 23 25 26 25 23 21 11  
CEILING (HFT)...250 250 250 250 250 240 210 240  
VISIBILITY (SM).10 10 10 10 10 10 10 10  
SFC PRES (IN)...874 873 872 871 869 868 866 867  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (65-75 PERCENT).  
MIN TEMPERATURE.....AROUND 30.  
MAX HUMIDITY........56 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST AROUND 5 MPH  
LATE IN THE EVENING, THEN BECOMING LIGHT EARLY  
IN THE MORNING.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 3 TO 7 MPH.  
SMOKE DISPERSAL.....POOR (800 KNOT-FT).  
LVORI...............2.  
ADI.................4.  
STABILITY CLASS.....6.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........21000 DECREASING TO 19000 EARLY IN THE MORNING.  
VISIBILITY (SM).....10.  
SFC PRESSURE (IN)...28.65.  
 
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........26 25 33 36 37 58 63 77 74 75 76 81  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............41 37 35 35 34 34 33 32 32 32 31 30  
DEWPOINT........13 15 15 16 16 16 16 16 16 16 16 16  
RH..............32 39 42 45 47 48 50 51 52 52 53 54  
20 FT WIND DIR..NE NE NE NE NE NE NE NE NE NE NE NE  
20 FT WIND SPD..2 2 3 3 4 4 5 5 5 4 4 4  
20 FT WIND GUST. 5 6 6 6 6 5 5  
MIX HGT (KFT)...1.0 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3  
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE NE NE NE  
TRANSP WIND SPD.5 3 3 3 5 6 7 7 7 6 6 6  
LVORI...........2 2 2 2 2 2 2 2 2 2 2 2  
ADI.............2 2 2 2 2 4 5 5 5 4 4 4  
VRATE KT-FT/10004 1 1 1 1 1 2 2 2 1 1 1  
CEILING (HFT)...240 240 240 240 240 210 210 210 210 210 210 190  
VISIBILITY (SM).10 10 10 10 10 10 10 10 10 10 10 10  
SFC PRES (IN)...868 870 870 870 870 869 869 868 867 866 865 865  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT).  
MAX TEMPERATURE.....AROUND 46.  
MIN HUMIDITY........37 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 6 MPH.  
MIXING HEIGHT.......1800 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE EAST 6  
TO 15 MPH IN THE LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....POOR (1000 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (23100 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............3.  
ADI.................16.  
STABILITY CLASS.....3.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........13000 DECREASING TO 9000 IN THE LATE MORNING  
AND AFTERNOON.  
VISIBILITY (SM).....10 IN THE MORNING.  
SFC PRESSURE (IN)...28.54.  
 
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........86 87 79 85 90 89 87 86 87 88 89 90  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............30 30 31 33 37 40 42 44 45 46 46 44  
DEWPOINT........16 15 15 16 16 17 19 20 21 23 24 25  
RH..............56 52 52 48 42 39 38 37 38 39 43 46  
20 FT WIND DIR..NE NE NE NE N NE E SE E E NE NE  
20 FT WIND SPD..3 3 4 4 4 4 4 4 4 5 5 5  
20 FT WIND GUST.4  
MIX HGT (KFT)...0.3 0.3 0.3 0.4 0.5 0.8 1.2 1.6 1.6 1.7 1.8 1.5  
TRANSP WIND DIR.NE NE NE SE SE SE SE SE SE E E E  
TRANSP WIND SPD.5 5 5 6 6 6 7 7 10 14 15 13  
LVORI...........3 2 2 2 2 2 2 2 2 2 2 2  
ADI.............5 5 5 6 6 7 10 12 18 24 27 21  
VRATE KT-FT/10001 1 1 2 2 4 7 9 15 21 23 17  
CEILING (HFT)...170 160 130 130 120 120 100 90 90 90 100 100  
VISIBILITY (SM).10 10 10 10 10 10 10  
SFC PRES (IN)...866 866 867 867 868 865 863 860 858 856 854 854  
 

 
FORECASTER...RODNEY HINSON  
REQUESTED BY...WES BENTLEY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2000941.0/GSP  
.DELDT 01/22/20  
.FORMATTERVERSION 1.0.26  
 
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