000
FZNT02 KNHC 251539
HSFAT2

HIGH SEAS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SAT AUG 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT AUG 25.
24 HOUR FORECAST VALID 1200 UTC SUN AUG 26.
48 HOUR FORECAST VALID 1200 UTC MON AUG 27.

.WARNINGS.

...ATLC AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM ISAAC NEAR 20.1N 74.6W 998 MB AT 1500 UTC AUG 25
MOVING NW OR 315 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM N 
SEMICIRCLE...90 NM SE QUADRANT AND 60 NM SW QUADRANT. SEAS 12 FT 
OR GREATER OVER FORECAST WATERS WITHIN 380 NM NE QUADRANT...180 
NM SE QUADRANT...45 NM SW QUADRANT...AND 450 NM NW QUADRANT WITH 
SEAS TO 21 FT.
.24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 23.3N 79.0W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. 
.48 HOUR FORECAST HURRICANE ISAAC NEAR 25.9N 83.1W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM NE QUADRANT...110 NM SE QUADRANT...90 NM SW 
QUADRANT...AND 150 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER 
FORECAST WATERS WITHIN 330 NM NE QUADRANT...120 NM SE 
QUADRANT...90 NM SW QUADRANT...AND 180 NM NW QUADRANT WITH SEAS 
TO 27 FT.
.72 HOUR FORECAST HURRICANE ISAAC NEAR 28.5N 85.5W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE ISAAC INLAND NEAR 31.5N 86.5W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION ISAAC INLAND NEAR 33.0N
86.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 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.

.EXCEPT AS NOTED IN ISAAC WARNING...WITHIN 330 NM NE...390 NM 
NW...390 NM SE...AND 90 NM SW QUADRANTS WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. 
.24 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNING...OVER 
FORECAST WATERS WITHIN 390 NM N SEMICIRCLE WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNING...GULF OF 
MEXICO WATERS E OF 26N WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ATLC 
WATERS W OF 78W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 

.REMNANT TROUGH OF TROPICAL DEPRESSION JOYCE FROM 23N52W TO 
19N52W. FROM 22N TO 28N BETWEEN 48W AND 55W E TO SE WINDS 20 TO 
25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST REMNANT TROUGH FROM 30N59W TO 23N60W. FROM 25N 
TO 30N BETWEEN 54W AND 60W WINDS 20 KT OR LESS. SEAS 8 FT.
.48 HOUR FORECAST TROUGH DISSIPATED. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT. 

.ATLC 24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...
E OF AREA NEAR 17N34W 1010 MB. FROM 15N TO 22N E OF 40N NE
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
19N40W 1010 MB. FROM 19N TO 24N E OF 43W NE TO E WINDS 20 TO 25 
KT. SEAS 8 TO 11 FT.

.CARIBBEAN 48 HOUR FORECAST FROM 12N TO 18N BETWEEN 68W AND 73W 
E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.

.GULF OF MEXICO S OF 25N E OF 84W NE TO E WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH ISAAC SECTION.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH ISAAC SECTION.

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.