684  
FNUS72 KNHC 181501  
FWSNHC  
 
SPOT FORECAST FOR DRY TORTUGAS DISCHARGE...USCG  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
1300 EDT TUE AUG 18 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0900 EDT ON AUGUST 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NWS  
NATIONAL HURRICANE CENTER/TROPICAL ANALYSIS AND FORECAST  
BRANCH AT (305)229-4425.  
   
DISCUSSION
 
HIGH PRESSURE OVER THE GULF IS MAINTAINING LIGHT BREEZES  
AND NEARLY FLAT SEAS THROUGH THE NEXT COUPLE OF DAYS. NO SIGNIFICANT  
SHOWER OR THUNDERSTORM ACTIVITY IS EXPECTED THROUGH THE MIDDLE OF THE  
WEEK.  
 
LATITUDE = 24.445N  
LONGITUDE = -83.461W  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
MAX TEMPERATURE.....AROUND 85.  
SURFACE WINDS (KTS).EAST WINDS UP TO 6 KNOTS IN THE LATE MORNING  
AND EARLY AFTERNOON BECOMING LIGHT, THEN  
BECOMING NORTHEAST AROUND 5 KNOTS LATE IN THE  
AFTERNOON.  
SWELL HEIGHT........EAST SWELL 1 FEET.  
WAVE HEIGHT.........1 FOOT.  
WAVE HEIGHT.........1 FOOT.  
WAVE PERIOD.........4 SECONDS.  
WAVE PERIOD.........4 SECONDS.  
WIND WAVE...........2 FEET.  
SEA SURFACE TEMP....86 DEGREES FAHRENHEIT.  
 
TIME (EDT) 9 AM NOON 3 PM  
SKY (%).........0 0 5  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE  
TSTM COV........  
TEMP............84 84 85  
SFC WIND (KTS)..E 6G9 E 4G7 NE 3G5  
SWELL HGT (FT)..E 1 E 1 E 1  
WAVE PERIOD (S).4 4 4  
WIND WAVE (FT)..2 2 1  
WAVE HEIGHT (FT)1 1 1  
SST (F).........86 86 86  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
MIN TEMPERATURE.....AROUND 83.  
SURFACE WINDS (KTS).NORTHEAST WINDS 5 TO 6 KNOTS IN THE EVENING AND  
OVERNIGHT BECOMING LIGHT.  
SWELL HEIGHT........EAST SWELL 1 FEET.  
WAVE HEIGHT.........1 FOOT.  
WAVE HEIGHT.........1 FOOT.  
WAVE PERIOD.........4 SECONDS.  
WAVE PERIOD.........4 SECONDS.  
WIND WAVE...........2 FEET.  
SEA SURFACE TEMP....86 DEGREES FAHRENHEIT.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........5 5 10 10 10 10 10 10 11 11 11 11  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............85 85 85 85 85 85 85 85 84 84 84 84  
SFC WND DIR.....NE NE NE NE NE NE NE NE SE SE SE N  
SFC WND SPD KTS.5 5 6 6 6 5 5 5 3 3 3 3  
SFC WND GST.....8 8 9 9 9 8 8 8 4 4 4 4  
SWELL DIRECTION.E E E E E E E E E E E E  
SWELL HGT (FT)..1 1 1 1 1 1 1 1 0 0 0 0  
WAVE PERIOD (S).4 4 4 4 4 4 4 4 4 4 4 4  
WIND WAVE (FT)..1 1 2 2 2 2 2 2 1 1 1 1  
WAVE HEIGHT (FT)1 1 1 1 1 1 1 1 1 1 1 1  
SST (F).........86 86 86 86 86 86 86 86 86 86 86 86  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT) THEN BECOMING MOSTLY  
CLOUDY (75-85 PERCENT).  
MAX TEMPERATURE.....AROUND 85.  
SURFACE WINDS (KTS).LIGHT WINDS BECOMING NORTH AROUND 4 KNOTS EARLY  
IN THE MORNING, THEN BECOMING LIGHT LATE IN THE  
MORNING BECOMING NORTH AROUND 4 KNOTS LATE IN  
THE AFTERNOON.  
SWELL HEIGHT........NORTH SWELL 0 FEET.  
WAVE HEIGHT.........1 FOOT.  
WAVE HEIGHT.........1 FOOT.  
WAVE PERIOD.........4 SECONDS.  
WAVE PERIOD.........4 SECONDS.  
WIND WAVE...........1 FOOT.  
SEA SURFACE TEMP....86 DEGREES FAHRENHEIT.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........11 11 76 76 76 76 76 76 83 83 83 83  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............84 84 84 84 84 84 84 84 85 85 85 85  
SFC WND DIR.....N N N N N NE NE NE N N N N  
SFC WND SPD KTS.3 3 4 4 4 3 3 3 3 3 3 4  
SFC WND GST.....4 4 7 7 7 5 5 5 4 4 4 7  
SWELL DIRECTION.E E E E E E E E N N N N  
SWELL HGT (FT)..0 0 0 0 0 0 0 0 0 0 0 0  
WAVE PERIOD (S).4 4 4 4 4 4 4 4 4 4 4 4  
WIND WAVE (FT)..1 1 1 1 1 1 1 1 1 1 1 1  
WAVE HEIGHT (FT)1 1 1 1 1 1 1 1 1 1 1 1  
SST (F).........86 86 86 86 86 86 86 86 86 86 86 86  
 

 
FORECASTER...CHRISTENSEN  
REQUESTED BY...SECTOR KEY WEST  
TYPE OF REQUEST...MARINE  
.TAG 2619010.5/NHC  
.DELDT 08/18/26  
.FORMATTERVERSION 2.0.0  
.EMAIL JAMES.A.BONNER@USCG.MIL,SKW@USCG.MIL,TDUKE@RESOLVEMARINE.COM  
 
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