549  
FNUS72 KGSP 231218  
FWSGSP  
 
SPOT FORECAST FOR ALARKA CREEK/SLIPOFF...USFS  
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC  
818 AM EDT SAT MAR 23 2019  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MARCH 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
COOL AND DRY HIGH PRESSURE WILL MOVE FROM OVER THE GREAT LAKES TO  
OFF THE CAROLINA COAST THROUGH THE WEEKEND, WITH A WARMING TREND  
EXPECTED THROUGH MONDAY. AN AREA OF LOW PRESSURE WILL TRACK ACROSS  
OUR AREA EARLY IN THE WEEK, BRINGING THE CHANCE OF RAIN AND A FEW  
THUNDERSTORMS, THEN DRY HIGH PRESSURE RETURNS FOR WEDNESDAY.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (0-5 PERCENT).  
MAX TEMPERATURE.....AROUND 51.  
MIN HUMIDITY........16 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH.  
MIXING HEIGHT.......2200 FT AGL INCREASING TO 3100 FT AGL LATE IN  
THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST 6 TO 14 MPH.  
SMOKE DISPERSAL.....POOR (4200 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (19800 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............2.  
ADI.................17.  
STABILITY CLASS.....3.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........22000.  
VISIBILITY (SM).....10.  
SFC PRESSURE (IN)...27.18.  
 
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........2 1 2 1 2 0 0 0 0  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............30 37 40 42 45 46 49 50 51  
DEWPOINT........12 10 8 7 5 5 6 8 9  
RH..............46 32 26 23 19 18 17 17 18  
20 FT WIND DIR..N N N N NW NW NW NW W  
20 FT WIND SPD..6 5 4 4 4 4 4 4 5  
20 FT WIND GUST.10 8 7 6 6 6 6 6 7  
MIX HGT (KFT)...0.6 0.8 1.0 1.6 2.2 2.7 2.8 3.0 3.1  
TRANSP WIND DIR.N N N N N N NW NW NW  
TRANSP WIND SPD.8 12 14 13 10 8 7 6 6  
LVORI...........2 2 2 2 2 2 2 2 2  
ADI.............6 9 17 26 27 24 21 19 17  
VRATE KT-FT/10004 8 12 18 20 19 17 16 14  
CEILING (HFT)...250 220 250 250 250 250 250 250 250  
VISIBILITY (SM).10 10 10 10 10 10 10 10 10  
SFC PRES (IN)...718 721 724 724 724 724 723 723 722  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).  
MIN TEMPERATURE.....AROUND 35.  
MAX HUMIDITY........55 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT, THEN BECOMING SOUTH 5 TO 6 MPH  
IN THE LATE EVENING AND OVERNIGHT.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 3 MPH SHIFTING TO THE SOUTH 2 TO 5  
MPH.  
SMOKE DISPERSAL.....POOR (600 KNOT-FT).  
LVORI...............2.  
ADI.................6.  
STABILITY CLASS.....5.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........21000.  
VISIBILITY (SM).....10.  
SFC PRESSURE (IN)...27.22.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........1 1 2 4 5 8 16 23 31 30 29 28  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............50 49 47 44 42 40 39 39 39 38 38 38  
DEWPOINT........11 12 14 17 20 23 23 22 22 21 21 20  
RH..............20 23 27 33 41 50 51 51 50 50 49 48  
20 FT WIND DIR..W W SW SW SW SW SW SW SW SW SW SW  
20 FT WIND SPD..4 4 3 4 5 6 6 6 5 5 6 6  
20 FT WIND GUST.7 6 5 6 8 10 10 10 8 8 8 10  
MIX HGT (KFT)...2.2 1.2 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3  
TRANSP WIND DIR.W SW S S S S S S S S S S  
TRANSP WIND SPD.3 2 2 2 3 5 5 5 5 5 5 5  
LVORI...........2 2 2 2 2 2 2 2 2 2 2 2  
ADI.............10 1 1 1 2 2 2 2 2 2 2 2  
VRATE KT-FT/10008 3 1 1 1 1 1 1 1 1 1 1  
CEILING (HFT)...250 250 250 250 250 250 250 240 210 240 210 240  
VISIBILITY (SM).10 10 10 10 10 10 10 10 10 10 10 10  
SFC PRES (IN)...722 723 723 724 726 727 727 726 726 725 724 723  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (70-80 PERCENT).  
MAX TEMPERATURE.....AROUND 53.  
MIN HUMIDITY........47 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 6 TO 10 MPH.  
MIXING HEIGHT.......2200 FT AGL INCREASING TO 3100 FT AGL LATE IN  
THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 14 MPH INCREASING TO 16 TO 18  
MPH LATE IN THE MORNING.  
SMOKE DISPERSAL.....POOR (900 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (49500 KNOT-FT) IN THE  
AFTERNOON.  
LVORI...............2.  
ADI.................8 INCREASING TO 37 LATE IN THE MORNING.  
STABILITY CLASS.....4.  
PCPN AMOUNT.........0.00 INCHES.  
CEILING (FT)........22000 DECREASING TO 14000 EARLY IN THE MORNING.  
VISIBILITY (SM).....10 IN THE MORNING AND EARLY AFTERNOON.  
SFC PRESSURE (IN)...27.17.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........29 31 33 36 38 40 45 50 55 61 67 73  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............37 37 36 40 43 45 48 50 51 52 52 52  
DEWPOINT........21 21 22 24 26 28 29 30 32 32 33 33  
RH..............50 52 55 53 51 50 48 47 47 47 47 48  
20 FT WIND DIR..SW S SW S S S S SW SW SW SW SW  
20 FT WIND SPD..6 6 6 6 6 7 7 8 8 8 9 9  
20 FT WIND GUST.10 10 11 10 10 11 12 12 13 14 14 14  
MIX HGT (KFT)...0.3 0.3 0.3 0.6 0.9 1.3 1.7 2.2 2.7 2.8 3.0 3.1  
TRANSP WIND DIR.S S S S SW SW SW SW SW SW SW SW  
TRANSP WIND SPD.5 5 6 9 14 17 17 17 16 17 18 18  
LVORI...........2 2 3 2 2 2 1 1 1 1 1 1  
ADI.............2 3 4 7 14 28 39 44 36 40 43 45  
VRATE KT-FT/10001 1 1 5 11 19 26 32 37 42 47 50  
CEILING (HFT)...250 220 180 170 170 160 160 150 150 150 140 140  
VISIBILITY (SM).10 10 10 10 10 10 10 10  
SFC PRES (IN)...724 725 726 727 728 729 727 725 723 721 719 717  
 

 
FORECASTER...SCOTT KRENTZ  
REQUESTED BY...JASONBOONE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1904284.0/GSP  
.DELDT 03/23/19  
.FORMATTERVERSION 1.0.26  
 
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