000
FZNT02 KNHC 251019
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SAT AUG 25.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 26.
48 HOUR FORECAST VALID 0600 UTC MON AUG 27.

.WARNINGS.

...ATLC AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM ISAAC NEAR 18.7N 72.5W 990 MB AT 0900 UTC AUG 25 
MOVING NW OR 315 DEG AT 17 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM N 
SEMICIRCLE...90 NM SE QUADRANT AND 75 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 420 NM NE QUADRANT...240 NM SE QUADRANT...60 
NM SW QUADRANT...AND 450 NM NW QUADRANT WITH SEAS TO 21 FT NE 
QUADRANT.
.24 HOUR FORECAST TROPICAL STORM ISAAC OVER WATER NEAR 22.2N
77.6W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM 
FORCE WINDS WITHIN 180 NM N SEMICIRCLE...90 NM SE QUADRANT AND 
60 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE 
QUADRANT...180 NM SE AND NW QUADRANTS... AND 60 NM SW QUADRANT 
WITH SEAS TO 21 FT NE QUADRANT. 
.36 HOUR FORECAST HURRICANE ISAAC NEAR 23.8N 80.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
180 NM NE QUADRANT...100 NM SE QUADRANT...80 NM SW QUADRANT
AND 160 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NE
QUADRANT...180 NM SE AND NW QUADRANTS...AND 120 NM SW QUADRANT 
WITH SEAS TO 24 FT NE QUADRANT.
.48 HOUR FORECAST HURRICANE ISAAC NEAR 25.0N 81.8W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 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 WITHIN 
360 NM NE QUADRANT...120 NM SE QUADRANT...75 NM SW QUADRANT...AND
180 NM NW QUADRANT WITH SEAS TO 27 FT.
.72 HOUR FORECAST HURRICANE ISAAC NEAR 27.7N 84.9W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE ISAAC NEAR 30.5N 86.0W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST TROPICAL STORM ISAAC INLAND NEAR 32.5N 86.0W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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 WARNINGS...WITHIN 390 NM E SEMICIRCLE...120 
NM SW AND 300 NM NW QUADRANTS OF CENTER WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. ELSEWHERE S OF 26N BETWEEN 70W AND 81W NE TO E WINDS 
20 TO 30 KT. SEAS TO 9 FT NEAR 78W.
.24 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS...OVER FORECAST 
WATERS WITHIN 240 NM OF CENTER EXCEPT 420 NM NE QUADRANT OF
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS...WITHIN 420 NM NE
QUADRANT...180 NM SE QUADRANT AND 120 NM SW QUADRANT OF CENTER 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNING...WITHIN 420 
NM NE QUADRANT...180 NM SE QUADRANT...120 NM SW QUADRANT AND 240
NM NW QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

.REMNANT TROUGH OF TROPICAL DEPRESSION JOYCE FROM 24N51W TO 
19N50W MOVING N NW 14 KT. WITHIN 360 NM E OF TROUGH NE TO E 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 19N TO 26N 
BETWEEN 47W AND 56W WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY 
IN SE SWELL.
.24 HOUR FORECAST REMNANT TROUGH FROM 28N58W TO 22N57W. WITHIN
240 NM E OF TROUGH E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST TROUGH FROM 31N62W TO 25N63W. WITHIN 180 NM E 
OF TROUGH FROM 26N TO 31N SE WINDS 20 KT. SEAS 8 FT.

.ATLC 24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...
E OF AREA NEAR 16N33W 1010 MB. FROM 15N TO 22N E OF 37N NE
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
17N37W 1010 MB. FROM 16N TO 23N E OF 43W NE TO E WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT.

.CARIBBEAN 24 HOUR FORECAST FROM 11N TO 15N BETWEEN 65W AND 71W 
E TO SE WINDS 20 KT. SEAS TO 8 FT. N OF 15N BETWEEN 69W AND 73W 
WINDS 20 KT OR LESS. SEAS TO 8 FT IN SE SWELL.
.48 HOUR FORECAST FROM 11N TO 17N BETWEEN 67W AND 72W E TO SE 
WINDS 20 TO 25 KT. SEAS TO 8 FT.

.GULF OF MEXICO S OF 25N BETWEEN 81W AND 87W NE WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST...EXCEPT AS NOTED ABOVE WITH ISAAC...S OF 26N 
BETWEEN 84W AND 89W NE WINDS 20 TO 30 KT. SEAS 8 TO 12 FT EXCEPT
TO 15 FT WITHIN THE FLORIDA CURRENT.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH ISAAC SECTION.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.