000
FZNT02 KNHC 180930
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SAT AUG 18 2012

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SAT AUG 18.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 19.
48 HOUR FORECAST VALID 0600 UTC MON AUG 20.

.WARNINGS.

...GULF OF MEXICO TROPICAL STORM WARNING...
.TROPICAL STORM HELENE NEAR 21.6N 97.0W 1007 MB AT 0900 UTC AUG 
18 MOVING NW OR 315 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM S  
SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 30 NM S SEMICIRCLE WITH 
SEAS TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM HELENE INLAND NEAR 22.4N 98.1W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 30 NM SE QUADRANT. SEAS 12 FT OR GREATER OVER 
FORECAST WATERS WITHIN 30 NM SE QUADRANT WITH SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HELENE INLAND NEAR 
23.8N 97.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.72 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.

.GULF OF MEXICO EXCEPT AS NOTED IN HELENE WARNINGS...FROM 21N TO 
23N W OF 95W WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST EXCEPT AS NOTED IN HELENE WARNINGS...FROM 22N 
TO 24N W OF 95W SE TO S WINDS 20 TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC HURRICANE GORDON N OF AREA NEAR 34.0N 40.7W. OVER FORECAST 
WATERS WITHIN 300 NM S SEMICIRCLE OF GORDON SW TO W WINDS 20 TO 
25 KT. SEAS 8 TO 12 FT IN PRIMARILY NW SWELL.
.ATLC 24 HOUR FORECAST TROPICAL STORM GORDON NE OF AREA NEAR 
34.5N 33.7W. OVER FORECAST WATERS WITHIN 300 NM SW SEMICIRCLE OF 
GORDON SW TO W WINDS 20 TO 25 KT. SEAS 12 TO 15 FT IN PRIMARILY 
NW SWELL. ELSEWHERE N OF 27N E OF 40W WINDS 20 KT OR LESS. SEAS 
8 TO 12 FT IN PRIMARILY NW SWELL.
.48 HOUR FORECAST TROPICAL STORM GORDON WELL NE OF AREA. N OF 
28N E OF 38W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW SWELL.

.ATLC 36 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE... 
NEAR 13.5N35W 1006 MB. OVER FORECAST WATERS WITHIN 240 NM NE 
SEMICIRCLE OF LOW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
14N38W 1004 MB. WITHIN 270 NM N SEMICIRCLE AND 90 NM S 
SEMICIRCLE OF LOW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.CARIBBEAN FROM 11N TO 15N BETWEEN 71W AND 76W NE TO E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 
.36 HOUR FORECAST FROM 12N TO 18N BETWEEN 68W AND 74W E WINDS 20 
TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.