000
FZNT02 KNHC 200850
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC THU AUG 20.
24 HOUR FORECAST VALID 0600 UTC FRI AUG 21.
48 HOUR FORECAST VALID 0600 UTC SAT AUG 22.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE BILL NEAR 21.6N 60.3W 949 MB AT 0900 UTC AUG 20
MOVING NW OR 305 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 175 NM NW AND SE
QUADRANTS...200 NM NE QUADRANT AND 100 NM SW QUADRANT.SEAS 12
FT OR GREATER WITHIN 400 NM NE QUADRANT...330 NM SE
QUADRANT...240 NM SW QUADRANT...AND 300 NM NW QUADRANT WITH SEAS
TO 53 FT.
.24 HOUR FORECAST HURRICANE BILL NEAR 25.2N 64.7W. MAXIMUM
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS
WITHIN 225 NM NE QUADRANT...200 NM SE QUADRANT...120 NM SW 
QUADRANT...AND 180 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
400 NM E SEMICIRCLE AND 300 NM W SEMICIRCLE. WITH SEAS TO 54 FT.
.48 HOUR FORECAST HURRICANE BILL NEAR 30.8N 68.1W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. SEAS TO 54 
FT.
.72 HOUR FORECAST HURRICANE BILL NEAR 38.5N 68.0W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE BILL NEAR 46.6N 59.0W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 53.5N 36.0W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

.SYNOPSIS AND FORECAST.

.ATLC...EXCEPT AS NOTED IN WARNINGS WITHIN 420 NM N SEMICIRCLE 
AND 300 NM S SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST...EXCEPT AS NOTED IN WARNING WITHIN 480 NM E 
SEMICIRCLE AND 300 NM SW AND 390 NM NW QUADRANTS WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST...EXCEPT AS NOTED IN WARNING WITHIN 480 NM E 
SEMICIRCLE AND 360 NM W SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 
12 FT. ELSEWHERE N OF 25N BETWEEN 67W AND 77W WINDS LESS THAN 20 
KT. SEAS 8 TO 12 FT IN E SWELL.

.ATLC ELSEWHERE FROM 15N TO 24N E OF 52W E TO SE WINDS TO 20 KT. 
SEAS 8 FT.
.24 HOUR FORECAST FROM 13N TO 24N E OF 55W NE TO E WINDS 20 KT. 
SEAS 8 FT
.48 HOUR FORECAST FROM 15N TO 25N E OF 60W NE TO E WINDS 20 KT. 
SEAS 8 FT.

.CARIBBEAN FROM 11N TO 15N BETWEEN 72W AND 78W NE TO E WINDS 20 
KT. SEAS 8 FT.
.24 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 76W NE TO E 
WINDS TO 20 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 68W AND 74W NE TO E 
WINDS TO 20 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER DGS. TROPICAL PREDICTION CENTER.