

073 

FZNT01 KWBC 252201

HSFAT1



HIGH SEAS FORECAST FOR METAREA IV 

NWS OCEAN PREDICTION CENTER WASHINGTON DC 

2230 UTC THU AUG 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 25 

24 HOUR FORECAST VALID 1800 UTC AUG 26 

48 HOUR FORECAST VALID 1800 UTC AUG 27 



.WARNINGS. 



...GALE WARNING... 

.24 HOUR FORECAST NEW LOW 54N50W 1005 MB. WITHIN 720 NM E 

SEMICIRCLE AND SW QUADRANT WINDS 20 TO 30 KT. SEAS TO 8 FT. 

.48 HOUR FORECAST LOW 54N40W 1003 MB. FROM 56N TO 60N BETWEEN 

41W AND 50W WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE FROM 41N 

TO 62N E OF 57W WINDS TO 25 KT. SEAS TO 11 FT.



.SYNOPSIS AND FORECAST. 



.LOW 61N62W 1003 MB MOVING NW 10 KT. WITHIN 420 NM NE AND 660 NM 

SE QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. 

.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED. 



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 60N TO 67N 

BETWEEN 57W AND 65W AND FROM 60N TO 62N BETWEEN 51W AND 57W AND 

FROM 49N TO 53N BETWEEN 50W AND 55W. 

.24 HOUR FORECAST DENSE FOG FROM 64N TO 67N BETWEEN 58W AND 62W 

AND FROM 60N TO 64N BETWEEN 49W AND 56W AND FROM 46N TO 57N 

BETWEEN 44W AND 54W. 

.48 HOUR FORECAST DENSE FOG FROM 59N TO 64N BETWEEN 52W AND 56W 

AND FROM 42N TO 48N BETWEEN 42W AND 50W AND FROM 50N TO 55N E OF 

40W. 



.HIGH 40N63W 1023 MB NEARLY STATIONARY. 

.24 HOUR FORECAST HIGH DISSIPATED. 



.HIGH 42N49W 1024 MB MOVING E 15 KT. 

.24 HOUR FORECAST HIGH 41N41W 1025 MB. 

.48 HOUR FORECAST HIGH MOVED E OF AREA. 



.HIGH 33N38W 1024 MB MOVING W 15 KT.

.24 HOUR FORECAST HIGH 34N46W 1022 MB. 

.48 HOUR FORECAST HIGH DISSIPATED. 



.HIGH 61N37W 1016 MB NEARLY STATIONARY. 

.24 HOUR FORECAST HIGH DISSIPATED. 



.FORECASTER HOLLEY. 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 THU AUG 25.

24 HOUR FORECAST VALID 1800 UTC FRI AUG 26.

48 HOUR FORECAST VALID 1800 UTC SAT AUG 27.



.WARNINGS.



...HURRICANE WARNING...

.TROPICAL STORM GASTON NEAR 21.6N 45.5W 994 MB AT 2100 UTC AUG

25 MOVING NW OR 315 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 55 KT

GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM N

SEMICIRCLE...70 NM SE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT

OR GREATER WITHIN 90 NM S SEMICIRCLE...150 NM NE QUADRANT AND

120 NM NW QUADRANT WITH SEAS TO 25 FT. ELSEWHERE WITHIN 210 NM

NE AND 90 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.

REMAINDER OF AREA WITHIN 300 NM NE AND 240 NM SW SEMICIRCLES

WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.

.24 HOUR FORECAST TROPICAL STORM GASTON NEAR 25.5N 49.6W.

MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE

WINDS WITHIN 130 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW

QUADRANT...AND 110 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12

FT OR GREATER WITHIN 240 NM NE SEMICIRCLE AND 120 NM SW

SEMICIRCLE WITH SEAS TO 27 FT. ELSEWHERE N OF 21N FROM 43W TO

55W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.

.48 HOUR FORECAST HURRICANE GASTON NEAR 28.1N 54.7W. MAXIMUM

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

WITHIN 130 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW

QUADRANT...AND 110 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12

FT OR GREATER OVER FORECAST WATERS N OF 26N BETWEEN 50W AND 57W

WITH SEAS TO 31 FT. ELSEWHERE OVER FORECAST WATERS N OF 25N

BETWEEN 48W AND 60W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED

SWELL.

.72 HOUR FORECAST HURRICANE GASTON NEAR 30.2N 57.0W. MAXIMUM

SUSTAINED WINDS 85 KT GUSTS 105 KT.

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

.96 HOUR FORECAST HURRICANE GASTON NEAR 31.8N 57.7W. MAXIMUM

SUSTAINED WINDS 95 KT GUSTS 115 KT.

.120 HOUR FORECAST HURRICANE GASTON NEAR 34.0N 55.0W. MAXIMUM

SUSTAINED WINDS 95 KT GUSTS 115 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 21.5N72W 1008 MB. WITHIN 150 NM NE

SEMICIRCLE OF LOW E TO SE WINDS 20 TO 30 KT. SEAS 10 TO 12 FT.

ELSEWHERE WITHIN 300 NM NE SEMICIRCLE OF LOW WINDS 20 TO 25 KT.

SEAS 8 TO 11 FT. 

.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR

23N76W 1007 MB. WITHIN 180 NM NE SEMICIRCLE OF LOW E TO SE WINDS

20 TO 30 KT. SEAS 8 TO 10 FT. 

.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR

24N78W 1007 MB. WITHIN 180 NM NE SEMICIRCLE OF LOW WINDS 20 TO

30 KT. SEAS 8 TO 11 FT.



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



$$

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.

