465  
FNUS72 KGSP 181354  
FWSGSP  
 
SPOT FORECAST FOR HURRICANE HELENE REPAIRS...USFS  
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC  
954 AM EDT TUE AUG 18 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1000 EDT ON AUGUST 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
SUNNY, HOT, AND HUMID TODAY WITH VERY LOW CHANCE OF RAIN. SIMILAR  
CONDITIONS ARE EXPECTED AGAIN WEDNESDAY.  
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CHANCE OF THUNDER...10 PERCENT.  
MAX TEMPERATURE.....AROUND 88.  
MIN HUMIDITY........52 PERCENT.  
SURFACE WINDS (MPH).LIGHT WINDS.  
CEILING (FT)........19900.  
VISIBILITY (SM).....9.  
 
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........6 7 9 14 16 16 16 14  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF THDR (%).0 0 0 0 10 10 10 10  
TEMP............75 80 85 88 87 88 88 87  
RH..............84 74 61 55 55 52 52 54  
SURFACE WND DIR.N N N N N N N N  
SURFACE WND SPD.2 2 2 2 2 2 2 2  
SURFACE WND GST.8 8 8 7 7 7 7 8  
CEILING (HFT)...236 245 246 242 235 226 199 203  
VISIBILITY (SM).9 9 9 9 9 9 9 9  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).  
CHANCE OF THUNDER...10 PERCENT.  
MIN TEMPERATURE.....AROUND 64.  
MAX HUMIDITY........91 PERCENT.  
SURFACE WINDS (MPH).LIGHT WINDS BECOMING NORTH AROUND 5 MPH EARLY  
IN THE EVENING, THEN BECOMING LIGHT IN THE LATE  
EVENING AND OVERNIGHT.  
CEILING (FT)........19500 DECREASING TO 2600.  
VISIBILITY (SM).....7.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........23 35 24 25 23 19 19 20 20 21 16 17  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF THDR (%).10 0 0 0 0 0 0 0 0 0 0 0  
TEMP............85 82 78 75 73 71 70 69 68 67 66 66  
RH..............58 62 71 75 79 81 83 85 86 89 89 88  
SURFACE WND DIR.N N N N N N N N N N N N  
SURFACE WND SPD.3 5 5 5 3 3 3 2 2 2 2 1  
SURFACE WND GST.9 12 13 12 10 10 9 8 7 6 6 6  
CEILING (HFT)...206 204 200 206 236 235 195 156 116 86 56 26  
VISIBILITY (SM).9 9 9 9 9 10 9 9 8 7 7 7  
   
WEDNESDAY  
 
SKY/WEATHER.........SUNNY (10-20 PERCENT). PATCHY FOG EARLY IN THE  
MORNING.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 89.  
MIN HUMIDITY........47 PERCENT.  
SURFACE WINDS (MPH).LIGHT WINDS.  
CEILING (FT)........2200 INCREASING TO 35000 LATE IN THE MORNING,  
THEN DECREASING TO 9800 LATE IN THE AFTERNOON  
INCREASING TO 13800 LATE IN THE AFTERNOON.  
VISIBILITY (SM).....5 DECREASING TO 4 EARLY IN THE MORNING, THEN  
INCREASING TO 7 IN THE LATE MORNING AND  
AFTERNOON.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........22 21 14 17 10 1 2 15 24 13 8 10  
WEATHER COV.....PTY PTY PTY  
WEATHER TYPE....FOG FOG FOG  
TSTM COV........  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............64 64 65 69 75 80 85 87 86 88 89 89  
RH..............91 91 90 85 76 66 58 53 51 49 48 47  
SURFACE WND DIR.N N NW N N N N N N N N NE  
SURFACE WND SPD.1 1 1 0 0 0 0 0 0 0 0 1  
SURFACE WND GST.5 5 5 3 2 3 5 5 5 5 5 5  
CEILING (HFT)...25 23 22 22 22 350 350 350 98 98 98 138  
VISIBILITY (SM).5 5 4 7 7 9 9 9 9 9 9 9  
 
 
FORECASTER...PM  
REQUESTED BY...BARRY JONES  
TYPE OF REQUEST...OTHER  
.TAG 2619919.0/GSP  
.DELDT 08/18/26  
.FORMATTERVERSION 2.0.0  
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