978 
FZNT02 KNHC 122129
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC THU JUL 12 2018

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 1800 UTC THU JUL 12.
24 HOUR FORECAST VALID 1800 UTC FRI JUL 13.
48 HOUR FORECAST VALID 1800 UTC SAT JUL 14.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.CARIBBEAN FROM 11N TO 13N BETWEEN 72W AND 76W NE TO E WINDS 25 
TO 30 KT. SEAS 9 TO 12 FT. ELSEWHERE FROM 11N TO 16N BETWEEN 70W 
AND 78W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. FROM 12.5N 
TO 16N BETWEEN 78W AND 82W WINDS 20 KT OR LESS. SEAS TO 8 FT IN 
NE TO E SWELL. 
.06 HOUR FORECAST FROM 11N TO 12.5N BETWEEN 74W AND 76W NE TO E 
WINDS 30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 10.5N TO 18N 
BETWEEN 70W AND 81W E WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT S 
OF 13N BETWEEN 70W AND 76W. SEAS 8 TO 12 FT. REMAINDER OF AREA 
FROM 10N TO 17N BETWEEN 77W AND 82W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN NE TO E SWELL.
.18 HOUR FORECAST FROM 10.5N TO 13.5N BETWEEN 73.5W AND 78W NE 
TO E WINDS 25 TO 30 KT. SEAS 10 TO 15 FT. ELSEWHERE FROM 10.5N 
TO 17N BETWEEN 70W AND 83W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 
12 FT. FROM 17N TO 18N BETWEEN 71W AND 74W E TO SE WINDS 20 TO 
25 KT. SEAS 8 FT.
.24 HOUR FORECAST FROM 10.5N TO 17N BETWEEN 71W AND 81W AND FROM 
11N TO 15N BETWEEN 69W AND 71W NE TO E WINDS 20 TO 25 KT... 
EXCEPT 25 TO 30 KT FROM 11N TO 13N BETWEEN 76W AND 78W. SEAS 8 
TO 12 FT...EXCEPT 9 TO 14 FT FROM 11N TO 13N BETWEEN 76W AND 
78W. FROM 11N TO 17 BETWEEN 81W AND 83W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NE TO E SWELL.
.30 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 76W NE TO E 
WINDS 30 TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10.5N TO 18N 
BETWEEN 70W AND 81W E WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT S 
OF 14N BETWEEN 70W AND 77W. SEAS 8 TO 12 FT. REMAINDER OF AREA 
FROM 10N TO 17N BETWEEN 77W AND 83W WINDS 20 KT OR LESS. SEAS TO 
8 TO 11 FT IN NE TO E SWELL.
.42 HOUR FORECAST FROM 11N TO 18N BETWEEN 72W AND 80W AND FROM 
11N TO 16N BETWEEN 69W AND 72W NE TO E WINDS 20 TO 25 KT... 
EXCEPT 25 TO 30 KT FROM 11N TO 13N BETWEEN 74W AND 76W. SEAS 8 
TO 11 FT...EXCEPT 9 TO 12 FT FROM 11N TO 13N BETWEEN 74W AND 76W.
ELSEWHERE FROM 10N TO 17N BETWEEN 69W AND 83W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 11N TO 18N BETWEEN 72W AND 80W AND FROM 
11N TO 15N BETWEEN 68W AND 72W E WINDS 20 TO 25 KT. SEAS 8 TO 12 
FT...HIGHEST NEAR 12N77W. FROM 10N TO 17N BETWEEN 80W AND 83W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC WEAK LOW PRES NEAR 31N71W 1016 MB WITH TROUGH TO 28N75W TO 
27N80W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. SCATTERED 
TSTMS WITHIN 150 NM E AND SE OF LOW AND ALSO FROM 27N TO 30N 
BETWEEN 71W AND 76W.
.12 HOUR FORECAST LOW TO MOVE N OF AREA WITH ASSOCIATED TROUGH 
FROM 31N71W TO 28N80W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 
SCATTERED TSTMS WITHIN 60 NM SE AND S OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 31N71W TO 28N76W TO 27N80W. 
WIND 20 KT OR LESS. SEAS LESS THAN 8 FT. SCATTERED TSTMS  
WITHIN 150 NM SE OF TROUGH BETWEEN 71W AND 76W.
.48 HOUR FORECAST WEAKENING TROUGH FROM 31N70W TO 28N75W TO 
27N79W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. SCATTERED 
TSTMS WITHIN 60 NM SE OF TROUGH.

.ATLC FROM 19N TO 27N E OF 39W NE WINDS 20 TO 25 KT. SEAS TO 8 
FT.
.18 HOUR FORECAST FROM 18N TO 26N E OF 44W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN NE SWELL.
.24 HOUR FORECAST FROM 18N TO 26N BETWEEN 38W AND 46W WINDS 20 
KT OR LESS. SEAS TO 8 FT IN DECAYING NE SWELL.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  

.ATLC 06 HOUR FORECAST S OF 21N BETWEEN 71W AND 74W...INCLUDING 
ATLC APPROACH TO WINDWARD PASSAGE...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 S OF 21N BETWEEN 71W AND 72W NE TO E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT. 
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST S OF 21N BETWEEN 71W AND 72W NE TO E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT. 

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.