000
FZNT02 KNHC 212150
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC FRI AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI AUG 21.
24 HOUR FORECAST VALID 1800 UTC SAT AUG 22.
48 HOUR FORECAST VALID 1800 UTC SUN AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE BILL NEAR 29.4N 66.9W 954 MB AT 2100 UTC AUG 21
MOVING NNW OR 340 DEG AT 17 KT. MAXIMUM SUSTAINED WINDS 90 KT
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 240 NM NE
QUADRANT...200 NM SE QUADRANT...100 NM SW QUADRANT...AND 175 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 450 NM NE
QUADRANT...360 NM SE QUADRANT...380 NM SW QUADRANT...AND 320 NM
NW QUADRANT WITH SEAS TO 46 FT.
.24 HOUR FORECAST HURRICANE BILL NEAR 35.1N 68.4W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. 
.48 HOUR FORECAST HURRICANE BILL NEAR 43.0N 64.0W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM E SEMICIRCLE...100 NM SW QUADRANT AND 150 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 330 NM N SEMICIRCLE AND 
540 NM S SEMICIRCLE WITH SEAS TO 42 FT.
.72 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 49.5N 47.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 54.5N 20.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW BILL NEAR 60.0N 6.0W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.

.SYNOPSIS AND FORECAST.

.ATLC EXCEPT AS NOTED IN WARNINGS ON HURRICANE BILL...ELSEWHERE 
OVER FORECAST WATERS WITHIN 270 NM W AND 420 NM E SEMICIRCLE 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE N OF 20N W OF 52W 
EXCEPT W OF THE BAHAMAS WINDS LESS THAN 20 KT. SEAS 8 TO 12 FT 
IN PRIMARILY SE SWELL.
.24 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS...OVER FORECAST 
WATERS WITHIN 480 NM SE QUADRANTS AND 360 NM SW QUADRANT...WINDS 
20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE N OF 25N W OF 58W EXCEPT 
W OF THE BAHAMAS WINDS LESS THAN 20 KT. SEAS 8 TO 12 FT IN 
PRIMARILY SE SWELL.
.48 HOUR FORECAST N OF 29N BETWEEN 60W AND 68W WINDS LESS THAN 
20 KT. SEAS TO 9 FT IN MIXED SE AND NW SWELL.

.ATLC FROM 12N TO 21N BETWEEN 49N AND 56N NE TO E WINDS 20 TO 25 
KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 11N TO 25N E OF 60W NE TO E 
WINDS TO 20 KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 13N TO 18N W OF 58W E WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT. ELSEWHERE FROM 12N TO 25N E OF 65W NE TO E 
WINDS TO 20 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 15N TO 26N E OF 68W E WINDS TO 20 KT. 
SEAS TO 9 FT.

.CARIBBEAN FROM 11N TO 12N BETWEEN 75W AND 77W NE TO E WINDS TO 
20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST E OF 75W E WINDS TO 20 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 70W TO 74W NE TO E WINDS 20 TO 25 KT. 
SEAS 8 TO 11 FT. ELSEWHERE FROM 11N TO 18N BETWEEN 64W AND 78W E 
WINDS TO 20 KT. SEAS 8 TO 11 FT IN E SWELL.

.GULF OF MEXICO S OF 25N W OF 92W SE WINDS TO 20 KT. SEAS LESS 
THAN 8 FT. WINDS AND SEAS HIGHER IN SCATTERED SQUALLS AND TSTMS 
FROM 22N TO 25N W OF 95W.
.12 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER SCHAUER CLARK. TROPICAL PREDICTION CENTER.