000
FZNT02 KNHC 231532
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND 
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC THU AUG 23.
24 HOUR FORECAST VALID 1200 UTC FRI AUG 24.
48 HOUR FORECAST VALID 1200 UTC SAT AUG 25.

.WARNINGS.

...CARIBBEAN HURRICANE WARNING...
.TROPICAL STORM ISAAC NEAR 15.6N 65.4W 1003 MB AT 1500 UTC AUG
23 MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE 
QUADRANT AND 90 NM NW QUADRANT.SEAS 12 FT OR GREATER WITHIN 390 
NM NE QUADRANT...60 NM SE QUADRANT...0 NM SW QUADRANT...AND 240 
NM NW QUADRANT WITH SEAS TO 16 FT.
.24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 16.9N 70.0W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 130 NM NE QUADRANT...50 NM SE QUADRANT...30 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
360 NM NE QUADRANT...90 NM SE QUADRANT...30 NM SW QUADRANT AND 
240 NM NW QUADRANT WITH SEAS TO 19 FT.
.48 HOUR FORECAST TROPICAL STORM ISAAC NEAR 19.3N 74.6W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 140 NM NE QUADRANT...60 NM SE QUADRANT...40 NM SW
QUADRANT...AND 120 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
330 NM NE QUADRANT...90 NM SE QUADRANT AND 150 NM NW QUADRANT 
WITH SEAS TO 20 FT.
.72 HOUR FORECAST TROPICAL STORM ISAAC INLAND NEAR 22.0N 78.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE ISAAC OVER WATER NEAR 24.5N 81.5W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST HURRICANE ISAAC NEAR 27.5N 84.5W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM JOYCE NEAR 15.2N 42.2W 1006 MB AT 1500 UTC AUG
23 MOVING WNW OR 295 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 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 0 NM S SEMICIRCLE...120 NM NE QUADRANT AND 60
NM NW QUADRANT WITH SEAS TO 15 FT.
.24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 17.1N 46.9W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM N SEMICIRCLE...40 NM SE QUADRANT AND 0 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...60 
NM SW QUADRANT AND 120 NM NW QUADRANT WITH SEAS TO 17 FT.
.48 HOUR FORECAST TROPICAL STORM JOYCE NEAR 19.9N 52.7W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM NE QUADRANT...40 NM SE QUADRANT...0 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
210 NM NE QUADRANT...30 NM SE QUADRANT AND 150 NM NW QUADRANT 
WITH SEAS TO 19 FT.
.72 HOUR FORECAST TROPICAL STORM JOYCE NEAR 23.9N 59.1W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM JOYCE NEAR 28.5N 63.7W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM JOYCE NEAR 33.5N 62.4W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 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 
520 NM N SEMICIRCLE...300 NM SE QUADRANT...AND 120 NM SW 
QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. FROM 18N 
TO 22N BETWEEN 70W AND 76W NE TO E WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 520 
NM N SEMICIRCLE...360 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 450 
NM N SEMICIRCLE...300 NM SE QUADRANT...AND 90 SW QUADRANT OF 
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 11N TO 
22N BETWEEN 60W AND 70W WINDS 20 TO 25 KT. SEAS 8 FT. ELSEWHERE 
S OF 27N BETWEEN 75W AND 80W NE TO E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.

.ATLC EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 270 NM N 
SEMICIRCLE...150 NM SE QUADRANT...AND 45 NM SW QUADRANT OF 
CENTER WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 10N TO 
20N E OF 44W WINDS 20 KT OR LESS. SEAS TO 9 FT IN SE SWELL.
.24 HOUR FORECAST EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 300 
NM N SEMICIRCLE...180 NM SE QUADRANT...AND 60 NM SW QUADRANT OF 
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 330 
NM N SEMICIRCLE...200 NM SE QUADRANT...AND 90 NM SW QUADRANT OF 
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

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

$$
.FORECASTER DGS. NATIONAL HURRICANE CENTER.