

435 

FZNT01 KWBC 272210

HSFAT1



HIGH SEAS FORECAST FOR METAREA IV 

NWS OCEAN PREDICTION CENTER WASHINGTON DC 

2230 UTC SAT AUG 27 2016 



CCODE/2:31:04:11:00/AOW+AOE/NWS/CCODE

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 

NATIONAL WEATHER SERVICE. EMAIL US AT 

VOSOPS@NOAA.GOV(LOWERCASE). 



PAN PAN 



NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W 



SYNOPSIS VALID 1800 UTC AUG 27 

24 HOUR FORECAST VALID 1800 UTC AUG 28 

48 HOUR FORECAST VALID 1800 UTC AUG 29 



.WARNINGS. 



...GALE WARNING... 

.LOW 49N47W 1004 MB MOVING NE 25 KT. WITHIN 480 NM SE QUADRANT 

WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT. ALSO WITHIN 480 NM SW 

QUADRANT WINDS TO 25 KT. SEAS LESS THAN 8 FT. 

.24 HOUR FORECAST LOW 54N38W 994 MB. FRONT FROM LOW TO 54N35W TO 

50N35W TO 45N38W TO 40N44W. WITHIN 300 NM W AND NW QUADRANTS AND 

240 NM E OF FRONT FROM 50N TO 43N WINDS 25 TO 35 KT. SEAS 8 TO 

14 FT. ALSO WITHIN 300 NM N...420 NM W AND 540 NM SW 

QUADRANTS...AND 300 NM E OF FRONT WINDS 20 TO 30 KT. SEAS TO 10 

FT.

.48 HOUR FORECAST LOW 55N35W 986 MB. WITHIN 300 NM NW AND 360 NM 

SW QUADRANTS WINDS 30 TO 45 KT. SEAS 8 TO 18 FT. ALSO WITHIN 360 

NM NW AND 420 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 15 

FT. 

...GALE WARNING... 

.COMPLEX LOW WITH MAIN LOW 54N46W 1004 MB MOVING E 10 KT. FROM 

54N TO 59N BETWEEN 40W AND 52W AND FROM 54N TO 57N BETWEEN 35W 

AND 40W WINDS 20 TO 30 KT. SEAS TO 10 FT. 

.18 HOUR FORECAST LOW 54N41W 999 MB. WITHIN 240 NM W AND NW 

QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 11 FT.

.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 54N38W 

ABOVE.



.SYNOPSIS AND FORECAST. 



.LOW 31N67W 1010 MB MOVING W 10 KT. OVER FORECAST WATERS WITHIN 

180 NM N SEMICIRCLE WINDS TO 25 KT. SEAS LESS THAN 8 FT. 

.24 HOUR FORECAST LOW 32N71W 1010 MB. WITHIN 240 NM N SEMICIRCLE 

WINDS TO 25 KT. SEAS LESS THAN 8 FT. 

.48 HOUR FORECAST LOW 33N76W 1014 MB. WINDS LESS THAN 25 KT. 

SEAS LESS THAN 8 FT. 



.48 HOUR FORECAST LOW 49N61W 1008 MB. WITHIN 300 NM S QUADRANT 

WINDS TO 25 KT. SEAS LESS THAN 8 FT.



.48 HOUR FORECAST EXCEPT AS NOTED BELOW WITH HURRICANE GASTON 

OVER FORECAST WATERS S OF 36N BETWEEN 49W AND 61W WINDS 20 TO 33 

KT. SEAS 9 TO 19 FT. 



.48 HOUR FORECAST OVER FORECAST WATERS N OF 62N BETWEEN 53W AND 

59W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 9 FT. 



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 49N 

BETWEEN 42W AND 53W...FROM 51N TO 54N E OF 39W...AND FROM 59N TO 

65N BETWEEN 59W AND 53W. 

.24 HOUR FORECAST DENSE FOG FROM 53N TO 56N E OF 41W. 

.48 HOUR FORECAST CONDITIONS IMPROVED. 



.24 HOUR FORECAST HIGH 44N64W 1025 MB. 

.48 HOUR FORECAST HIGH 42N49W 1023 MB. 



.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.



NATIONAL HURRICANE CENTER MIAMI FL



ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND

GULF OF MEXICO



SYNOPSIS VALID 1800 UTC SAT AUG 27.

24 HOUR FORECAST VALID 1800 UTC SUN AUG 28.

48 HOUR FORECAST VALID 1800 UTC MON AUG 29.



.WARNINGS.



...HURRICANE WARNING...

.TROPICAL STORM GASTON NEAR 29.2N 54.0W 993 MB AT 2100 UTC AUG

27 MOVING NW OR 320 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 60 KT

GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE

QUADRANT...90 NM SE QUADRANT...50 NM SW QUADRANT...AND 110 NM NW

QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM N AND 90 NM S

SEMICIRCLES WITH SEAS TO 27 FT. ELSEWHERE N OF 27N BETWEEN 49W

AND 56W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA

OVER FORECAST WATERS N OF 25N BETWEEN 48W AND 58W WINDS 20 KT OR

LESS. SEAS TO 10 FT IN MIXED SWELL.

.12 HOUR FORECAST HURRICANE GASTON NEAR 30.0N 54.6W. MAXIMUM

SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS

WITHIN 130 NM NE QUADRANT...100 NM SE QUADRANT...60 NM SW

QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN

150 NM N AND 90 NM S SEMICIRCLES WITH SEAS TO 29 FT. ELSEWHERE N

OF 27N BETWEEN 51W AND 57W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

REMAINDER OF AREA OVER FORECAST WATERS N OF 25N BETWEEN 50W AND

61W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.

.24 HOUR FORECAST HURRICANE GASTON NEAR 30.7N 55.1W. MAXIMUM

SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS

WITHIN 130 NM NE QUADRANT...120 NM SE QUADRANT...80 NM SW

QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN

150 NM WITH SEAS TO 30 FT. ELSEWHERE N OF 28N BETWEEN 52W AND

58W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA OVER

FORECAST WATERS N OF 27N BETWEEN 50W AND 63W WINDS 20 KT OR

LESS. SEAS 8 TO 11 FT IN MIXED SWELL.

.48 HOUR FORECAST HURRICANE GASTON NEAR 31.4N 54.9W. MAXIMUM

SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS

WITHIN 140 NM NE QUADRANT...130 NM SE QUADRANT...100 NM SW

QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN

270 NM NE QUADRANT...210 NM NW QUADRANT...AND 150 NM S

SEMICIRCLE WITH SEAS TO 32 FT. ELSEWHERE OVER FORECAST WATERS

WITHIN 180 NM S SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

REMAINDER OF AREA OVER FORECAST WATERS N OF 27N BETWEEN 52W AND

62W WINDS 20 KT OR LESS. SEAS TO 12 FT IN MIXED SWELL.

.72 HOUR FORECAST HURRICANE GASTON NEAR 32.5N 53.0W. MAXIMUM

SUSTAINED WINDS 85 KT GUSTS 105 KT.

EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.

.96 HOUR FORECAST HURRICANE GASTON NEAR 34.0N 50.0W. MAXIMUM

SUSTAINED WINDS 75 KT GUSTS 90 KT.

.120 HOUR FORECAST HURRICANE GASTON NEAR 37.0N 44.0W. MAXIMUM

SUSTAINED WINDS 65 KT GUSTS 80 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.



.ATLC LOW PRES NEAR 23N79W 1009 MB. WITHIN 120 NM NE QUADRANT OF

LOW SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 

.12 HOUR FORECAST LOW PRES NEAR 24N80W 1009 MB. WINDS 20 KT OR

LESS. SEAS LESS THAN 8 FT.



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



$$

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.

