000
FZNT02 KNHC 201456
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SAT AUG 20 2011

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT AUG 20.
24 HOUR FORECAST VALID 1200 UTC SUN AUG 21.
48 HOUR FORECAST VALID 1200 UTC MON AUG 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HARVEY NEAR 16.8N 87.6W 998 MB AT 1500 UTC AUG
20 MOVING W OR 280 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N 
SEMICIRCLE...20 NM SE QUADRANT AND 0 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 45 NM N AND WITHIN 15 NM S SEMICIRCLES WITH 
SEAS TO 15 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 17.3N 
91.1W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST TROPICAL REMNANT LOW HARVEY NEAR 17.7N 
95.6W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.72 HOUR FORECAST...DISSIPATED.

.SYNOPSIS AND FORECAST.

.ATLC S OF 22N W OF 70W E WINDS 20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.ATLC LOW PRES E OF AREA 16N25W 1008 MB. FROM 17N TO 24N E OF 
45W NE TO E WINDS 20 KT. SEAS TO 8 FT. POSSIBLE TROPICAL CYCLONE 
FORMATION.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...E OF 
AREA NEAR 18N29.5W 1006 MB. FROM 17N TO 25N E OF 37W NE WINDS 20 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
20N34W 1005 MB. FROM 18N TO 27N E OF 40W N TO NE WINDS 20 KT. 
SEAS TO 10 FT PRIMARILY IN E SWELL.

.ATLC AND CARIBBEAN LOW PRES 14N55W 1007 MB. WITHIN 480 NM NW 
AND WITHIN 600 NM NE QUADRANTS NE TO E WINDS 20 TO 25 KT. SEAS 8 
TO 13 FT. POSSIBLE TROPICAL CYCLONE FORMATION. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR  
16N61W 1005 MB. WITHIN 480 NM NW AND WITHIN 660 NM NE QUADRANTS 
AND 90 NM S SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. 
ELSEWHERE FROM 14N TO 25N BETWEEN 50W AND 65W WINDS LESS THAN 20 
KT. SEAS TO 8 FT IN MIXED SWELL. SCATTERED TSTMS WITHIN 240 NM 
OF CENTER.  
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
17N68W 1004 MB. WITHIN 480 NM NW AND WITHIN 660 NM NE QUADRANTS 
AND 120 NM S SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 15 FT. 
SCATTERED TSTMS WITHIN 240 NM OF CENTER.  

.CARIBBEAN EXCEPT AS NOTED IN HARVEY WARNING...OVER FORECAST 
WATERS WITHIN 120 NM N AND 30 NM S SEMICIRCLES WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST EXCEPT AS NOTED IN HARVEY WARNING...OVER 
FORECAST WATERS S OF 18N W OF 85W E TO SE WINDS 20 KT. SEAS TO 8 
FT.
.30 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.GULF OF MEXICO 24 HOUR FORECAST TROUGH S OF 22N ALONG 93W. 
WITHIN 60 NM OF TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT. 
SCATTERED TSTMS.
.48 HOUR FORECAST TROUGH S OF 22N ALONG 95W. WITHIN 120 NM OF 
TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT. SCATTERED 
TSTMS.   

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

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.