000
FZNT02 KNHC 240953
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI AUG 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI AUG 24.
24 HOUR FORECAST VALID 0600 UTC SAT AUG 25.
48 HOUR FORECAST VALID 0600 UTC SUN AUG 26.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM ISAAC NEAR 16.1N 70.0W 1000 MB AT 0900 UTC AUG
24 MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 160 NM NE
QUADRANT...90 NM SE QUADRANT...60 NM SW QUADRANT...AND 120 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 490 NM N SEMICIRCLE...90 
NM SE QUADRANT AND 0 NM SW QUADRANT WITH SEAS TO 17 FT.
.24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 18.8N 74.1W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM NW AND SE QUADRANTS...160 NM NE QUADRANT AND 60 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE QUADRANT... 
120 NM SE QUADRANT...0 NM SW QUADRANT AND 240 NM NW QUADRANT 
WITH SEAS TO 18 FT.
.48 HOUR FORECAST TROPICAL STORM ISAAC OVER WATER NEAR 22.4N 
78.9W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM 
FORCE WINDS WITHIN 120 NM NW AND SE QUADRANTS...160 NM NE 
QUADRANT AND 40 NM SW QUADRANT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER WITH SEAS 
TO 18 FT.
.72 HOUR FORECAST TROPICAL STORM ISAAC NEAR 25.0N 82.5W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE ISAAC NEAR 28.0N 86.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST HURRICANE ISAAC INLAND NEAR 30.5N 87.5W.
MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT.

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.

.CARIBBEAN AND ATLC EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 
500 NM N SEMICIRCLE...360 NM SE QUADRANT...AND 120 NM SW QUADRANT
OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 13N 
TO 27N BETWEEN 57W AND 61W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
SE SWELL.
.24 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 500 
NM N SEMICIRCLE...420 NM SE QUADRANT...AND 150 NM SW QUADRANT OF 
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 420 
NE SEMICIRCLE...AND 150 SW SEMICIRCLE OF CENTER WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. ELSEWHERE S OF 29N BETWEEN 70W AND 81W 
WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL. 

.TROPICAL DEPRESSION JOYCE NEAR 16.9N 45.0W 1008 MB AT 0900 UTC
AUG 24 MOVING NW OR 305 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 30 
KT GUSTS 40 KT. WITHIN 300 NM N SEMICIRCLE...150 NM SE QUADRANT
WINDS 20 TO 30 KT. SEAS 1O TO 15 FT WITHIN 210 NM N SEMICIRCLE
AND 8 TO 10 FT WITHIN 120 NM S SEMICIRCLE. ELSEWHERE FROM 10N TO 
20N BETWEEN 42W AND 51W WINDS 20 KT OR LESS. SEAS TO 9 FT IN SE 
SWELL. 
.24 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 19.2N 50.6W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 270 NM N 
SEMICIRCLE...120 NM SE QUADRANT...AND 30 NM SW QUADRANT OF 
CENTER WINDS 20 TO 30 KT. SEAS 10 TO 15 FT WITHIN 180 NM N
SEMICIRCLE AND 8 TO 10 FT ELSEWHERE WITHIN 300 NM OF CENTER.
ELSEWHERE FROM 13N TO 25N E OF 52W WINDS 20 KT OR LESS. 
.48 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 22.8N 57.5W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 360 NM NE
SEMICIRCLE...150 NM SE QUADRANT...AND 60 NM SW QUADRANT OF 
CENTER WINDS 20 TO 30 KT. SEAS 10 TO 16 FT. ELSEWHERE FROM 18N
TO 28N BETWEEN 50W AND 60W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
MIXED SWELL.
.72 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 27.0N 63.0W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 31.5N 64.0W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 36.5N 56.0W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

.ATLC LOW PRES...POSSIBLE TROPICAL CYCLONE...E OF AREA NEAR 
18N33W 1009 MB. FROM 14N TO 21N E OF 41W NE WINDS 20 TO 25 KT. 
SEAS 8 FT.

.CARIBBEAN 24 HOUR FORECAST S OF 13N BETWEEN 64W AND 70W E TO SE
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 15N TO 18N BETWEEN 65W AND 71W E TO SE 
WINDS 20 TO 25 KT. SEAS 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.