000
FZNT02 KNHC 132136
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SUN AUG 13 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

SECURITE

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC SUN AUG 13.
24 HOUR FORECAST VALID 1200 UTC MON AUG 14.
48 HOUR FORECAST VALID 1200 UTC TUE AUG 15.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM GERT NEAR 28.1N 71.7W 1011 MB AT 2100 UTC AUG 13 
MOVING NNW OR 335 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM NE 
QUADRANT. ELSEWHERE WITHIN 120 NM NE AND 45 NM SW SEMICIRCLES 
WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL STORM GERT NEAR 31.1N 72.1W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM W SEMICIRCLE...90 NM NE QUADRANT AND 80 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 75 NM NE AND 30 NM SW 
SEMICIRCLES WITH SEAS TO 16 FT. ELSEWHERE OVER FORECAST WATERS 
WITHIN 90 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST TROPICAL STORM GERT N OF AREA NEAR 35.1N 
68.8W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM 
FORCE WINDS WITHIN 70 NM NE AND SW QUADRANTS...40 NM NW QUADRANT 
AND 90 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM NE AND 
60 NM SW SEMICIRCLES WITH SEAS TO 18 FT. OVER FORECAST WATERS 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST TROPICAL STORM GERT NEAR 39.8N 59.1W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL GERT NEAR 45.0N 
44.5W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST...DISSIPATED. 

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE 
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE 
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC 48 HOUR FORECAST TROPICAL WAVE ALONG 36W FROM 20N TO 09N 
WITH LOW PRES NEAR 13N36W 1010 MB. WITHIN 75 NM OF LOW CENTER 
EXCEPT 30 NM SW QUADRANT WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

.CARIBBEAN 12 HOUR FORECAST FROM 11N TO 13.5N BETWEEN 73W AND 
77W NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 78W NE TO E 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.