000
FZNT02 KNHC 180840
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE JUL 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE JUL 18.
24 HOUR FORECAST VALID 0600 UTC WED JUL 19.
48 HOUR FORECAST VALID 0600 UTC THU JUL 20.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM DON NEAR 11.5N 56.2W 1007 MB AT 0900 UTC JUL 18 
MOVING W OR 280 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM N 
SEMICIRCLE...20 NM SE QUADRANT AND 0 NM SW QUADRANT.  SEAS 12 FT 
OR GREATER WITHIN 30 NM N SEMICIRCLE...20 NM SE QUADRANT AND 0 
NM SW QUADRANT WITH SEAS TO 12 FT. ELSEWHERE FROM 12N TO 20N 
BETWEEN 52W AND 60W E WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST TROPICAL STORM DON NEAR 12.1N 63.2W. MAXIMUM 
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM N SEMICIRCLE WITH 
SEAS TO 12 FT. ELSEWHERE S OF 15N BETWEEN 62W AND 65W E WINDS 20 
TO 33 KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST TROPICAL STORM DON NEAR 12.7N 71.6W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM N SEMICIRCLE...20 NM SE QUADRANT AND 0 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM N SEMICIRCLE WITH 
SEAS TO 12 FT. ELSEWHERE FROM 11N TO 16N NE TO E WINDS 20 TO 330 
KT. SEAS 8 TO 11 FT.  
.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.

.ATLC FROM 18N TO 22N BETWEEN 40W AND 47W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN NE SWELL.
.24 HOUR FORECAST FROM 19N TO 23N BETWEEN 42W AND 52W WINDS 20 
KT OR LESS. SEAS TO 8 FT IN NE SWELL.
.48 HOUR FORECAST FROM 18N TO 21N BETWEEN 42W AND 50W WINDS 20 
KT OR LESS. SEAS TO 8 FT IN NE SWELL. 

.ATLC 12 HOUR FORECAST S OF 21N BETWEEN 71W AND 73W E WINDS 20 
TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST S OF 21N BETWEEN 72W AND 74W E WINDS 20 TO 25 
KT. SEAS TO 8 FT. 
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST S OF 21N BETWEEN 71W AND 73W E WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST S OF 21N BETWEEN 72W AND 74W E WINDS 20 TO 25 
KT. SEAS TO 8 FT. 

.CARIBBEAN S OF 17.5N WEST OF 85W...INCLUDING THE GULF OF 
HONDURAS...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

.CARIBBEAN FROM 11N TO 15N BETWEEN 69W AND 79W NE TO E WINDS 20 
TO 25 KT. SEAS 8 TO 9 FT. 
.24 HOUR FORECAST FROM 11N TO 16N BETWEEN 70W AND 81W NE TO E 
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST CONDITIONS MERGED ABOVE. 

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

$$

.FORECASTER AL. NATIONAL HURRICANE CENTER.