000
FZNT02 KNHC 202133
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC THU AUG 20 2009

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS
AMENDED FOR ATLC FORECAST

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

SYNOPSIS VALID 1800 UTC THU AUG 20.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 21.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 22.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE BILL NEAR 23.8N 63.2W 948 MB AT 2100 UTC AUG 20
MOVING NW OR 305 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM NW AND SE 
QUADRANTS...225 NM NE QUADRANT AND 120 NM SW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 440 NM NE QUADRANT...320 NM SE 
QUADRANT...350 NM SW QUADRANT...AND 375 NM NW QUADRANT WITH SEAS 
TO 52 FT.
.24 HOUR FORECAST HURRICANE BILL NEAR 28.3N 67.1W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 440 NM 
NE QUADRANT...390 NM SE QUADRANT...360 NM SW QUADRANT...AND 300 
NM NW QUADRANT WITH SEAS TO 60 FT. 
.48 HOUR FORECAST HURRICANE BILL NEAR 34.5N 69.0W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 225 NM NE QUADRANT...200 NM SE QUADRANT...120 NM SW 
QUADRANT...AND 180 NM NW QUADRANT. LITTLE CHANGE IN SEAS 12 FT 
OR GREATER.
.72 HOUR FORECAST HURRICANE BILL NEAR 42.5N 64.5W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 49.0N 49.5W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 53.5N 24.0W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

.SYNOPSIS AND FORECAST.

.ATLC...EXCEPT AS NOTED IN WARNINGS ON HURRICANE BILL WITHIN 540 
NM NE...420 NM SE...390 NM SW...AND 420 NM NW QUADRANTS WINDS 20 
TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST...EXCEPT AS NOTED IN WARNINGS WITHIN 540 NM 
NE...420 NM SE...330 NM SW...AND 360 NM NW QUADRANTS WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 65W TO 75W WINDS LESS 
THAN 20 KT. SEAS 8 TO 12 FT IN E SWELL.
.48 HOUR FORECAST...EXCEPT AS NOTED IN WARNINGS OVER FORECAST 
WATERS WITHIN 540 NM SE AND 330 NM SW QUADRANTS WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. ELSEWHERE N OF 25N W OF 57W TO THE BAHAMAS 
WINDS LESS THAN 20 KT. SEAS 8 TO 12 FT IN E TO SE SWELL.

.ATLC ELSEWHERE FROM 13N TO 24N E OF 53W...NE TO E WINDS 20 KT. 
SEAS TO 9 FT.
.24 HOUR FORECAST FROM 13N TO 24N E OF 59W...NE TO E WINDS TO 20 
KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 13N TO 24N E OF 62W...NE TO E WINDS TO 20 
KT. SEAS TO 9 FT.

.CARIBBEAN FROM 11N TO 13N BETWEEN 74W AND 79W...NE TO E WINDS 
TO 20 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 75W AND 77W AND S OF 
15N E OF 75W NE TO E WINDS TO 20 KT. SEAS TO 8 FT.

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

$$
.FORECASTER SCHAUER CLARK. TROPICAL PREDICTION CENTER.