North Atlantic High Seas Forecast

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FZNT01 KWBC 180952
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1030 UTC WED JUL 18 2018 

CCODE/1:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION 
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE). 

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 
NATIONAL WEATHER SERVICE. EMAIL US AT 
VOSOPS@NOAA.GOV(LOWERCASE). 

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH 
AMERICAN ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.SHTML 

SECURITE 

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

SYNOPSIS VALID 0600 UTC JUL 18. 
24 HOUR FORECAST VALID 0600 UTC JUL 19. 
48 HOUR FORECAST VALID 0600 UTC JUL 20. 

.WARNINGS. 

...GALE WARNING... 
.LOW 39N73W 1007 MB MOVING NE 15 KT. FROM 32N TO 40N BETWEEN 63W 
AND 76W AREA OF SW WINDS 20 TO 30 KT. SEAS TO 9 FT. 
.24 HOUR FORECAST LOW 41N66W 1009 MB. FRONT FROM 50N55W TO 
44N60W TO LOW CENTER TO 36N70W TO 34N74W. WITHIN 240 NM E AND SE 
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN 
300 NM SE OF FRONT WINDS 20 TO 30 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST LOW 49N53W 1014 MB. FRONT FROM 52N50W TO LOW 
CENTER TO 44N57W TO 36N66W. WITHIN 240 NM E AND SE OF FRONT 
WINDS 20 TO 30 KT. SEAS TO 11 FT.

...GALE WARNING... 
.18 HOUR FORECAST LOW 59N58W 997 MB. WITHIN 240 NM NW AND 180 NM 
W QUADRANTS...AND FROM 49N TO 57N BETWEEN 49W AND 56W WINDS TO 
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 60N57W 994 MB. WITHIN 300 NM E AND NW 
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 9 FT. ALSO FROM 50N TO 58N 
BETWEEN 47W AND 54W WINDS TO 25 KT. SEAS TO 8 FT. 
.30 HOUR FORECAST LOW 62N57W 992 MB. WITHIN 120 NM OF W 
GREENLAND COAST FROM 61N TO 64N WINDS 25 TO 35 KT. SEAS TO 11 
FT. 
.48 HOUR FORECAST LOW 63N57W 994 MB. FROM 60N TO 66N BETWEEN 51W 
AND 62W WINDS 20 TO 30 KT. SEAS TO 12 FT. 

.SYNOPSIS AND FORECAST. 

.FROM 47N TO 54N BETWEEN 41W AND 49W AREA OF SW WINDS TO 25 KT. 
SEAS TO 9 FT. 
.24 HOUR FORECAST CONDITIONS DIMINISHED. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM S AND SW OF A LINE 
FROM 55N35W TO 61N50W TO 60N60W...AND N OF 44N BETWEEN 35W AND 
66W...AND FROM 40N TO 44N BETWEEN 65W AND 69W. 
.24 HOUR FORECAST DENSE FOG S OF A LINE FROM 63N61W TO 55N35W 
AND N OF A LINE FROM 44N35W TO 43N50W TO 42N62W. 
.48 HOUR FORECAST DENSE FOG S OF A LINE FROM 62N35W TO 58N40W TO 
53N57W...AND N OF A LINE FROM 48N35W TO 45N40W TO 43N50W TO 
42N58W. 

.HIGH 38N41W 1031 MB DRIFTING NE AND BECOMING STATIONARY AFTER 
24 HOURS. 
.24 HOUR FORECAST HIGH 42N37W 1032 MB. 
.48 HOUR FORECAST HIGH 41N37W 1033 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 0600 UTC WED JUL 18.
24 HOUR FORECAST VALID 0600 UTC THU JUL 19.
48 HOUR FORECAST VALID 0600 UTC FRI JUL 20.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 15N BETWEEN 70W AND 79W NE TO E WINDS 20 TO 30 KT. 
SEAS 8 TO 13 FT. FROM 10N TO 16N BETWEEN 79W AND 82W WINDS 20 KT 
OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.
.18 HOUR FORECAST FROM 11N TO 12.5N BETWEEN 74W AND 76W NE WINDS 
30 TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 11N TO 15N BETWEEN 
71W AND 79W NE TO E WINDS 20 TO 30 KT. SEAS TO 11 FT. REMAINDER 
OF AREA FROM 10N TO 17N BETWEEN 76W AND 83W WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN NE TO E SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST FROM 10.5N TO 15N BETWEEN 73W AND 80W NE TO E 
WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 10N TO 16N 
BETWEEN 75W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE 
TO E SWELL.
.48 HOUR FORECAST FROM 11N TO 15.5N BETWEEN 68W AND 77W NE TO E 
WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. FROM 10N TO 15N BETWEEN 77W 
AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC 24 HOUR FORECAST FROM 14N TO 17N BETWEEN 40W AND 45W WINDS 
20 KT OR LESS. SEAS 8 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 10N TO 14N BETWEEN 50W AND 55W WINDS 20 
KT OR LESS. SEAS 8 FT IN NE SWELL.

.ATLC 36 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.