North Atlantic High Seas Forecast

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FZNT01 KWBC 180427 CCA
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 0000 UTC JUL 18. 
24 HOUR FORECAST VALID 0000 UTC JUL 19. 
48 HOUR FORECAST VALID 0000 UTC JUL 20. 

.WARNINGS. 

...GALE WARNING... 
.FROM 34N TO 39N BETWEEN 67W AND 77W AREA OF SW WINDS 20 TO 30 
KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 40N67W 1009 MB. FRONT FROM 48N59W TO 
43N63W TO LOW CENTER TO 36N73W TO 33N78W. WITHIN 300 NM E OF 
FRONT WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 41N63W 1012 MB. FRONT FROM 47N58W TO LOW 
CENTER TO 40N64W TO 35N70W. WITHIN 240 NM SE QUADRANT...AND 180 
NM E OF FRONT FROM 36N TO 43N WINDS 25 TO 35 KT. SEAS 8 TO 12 
FT. ELSEWHERE WITHIN 300 NM SE QUADRANT...AND 300 NM E OF FRONT 
WINDS 20 TO 30 KT. SEAS TO 10 FT.

...GALE WARNING... 
.24 HOUR FORECAST LOW 59N58W 996 MB. WITHIN 240 NM NW AND 180 NM 
W QUADRANTS...AND FROM 52N TO 56N BETWEEN 50W AND 56W WINDS TO 
25 KT. SEAS TO 8 FT.
.36 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. WITHIN 180 NM SW SEMICIRCLE 
WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE WITHIN 240 NM NW 
QUADRANT AND FROM 59N TO 64N W OF 50W WINDS 20 TO 30 KT. SEAS TO 
14 FT. 

.SYNOPSIS AND FORECAST. 

.FROM 38N TO 52N BETWEEN 44W AND 52W AREA OF S TO SW WINDS TO 25 
KT. SEAS TO 10 FT. 
.24 HOUR FORECAST CONDITIONS DIMINISHED. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM S AND SW OF A LINE 
FROM 56N35W TO 61N51W TO 61N60W...AND N OF 42N BETWEEN 35W AND 
63W...AND FROM 40N TO 44N BETWEEN 65W AND 71W.  
.24 HOUR FORECAST DENSE FOG S OF A LINE FROM 64N61W TO 59N44W TO 
60N35W AND N OF A LINE FROM 46N35W TO 43N50W TO 42N63W.  
.48 HOUR FORECAST DENSE FOG FROM 43N TO 62N BETWEEN 35W AND 
54W...FROM 43N TO 48N BETWEEN 54W AND 61W. 

.HIGH 38N41W 1032 MB NEARLY STATIONARY NEXT 24 HOURS THEN 
DRIFTING E. 
.24 HOUR FORECAST HIGH 40N39W 1032 MB. 
.48 HOUR FORECAST HIGH 41N36W 1034 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 0000 UTC WED JUL 18.
24 HOUR FORECAST VALID 0000 UTC THU JUL 19.
48 HOUR FORECAST VALID 0000 UTC FRI JUL 20.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 13N BETWEEN 70W AND 76W NE TO E WINDS 25 TO 35 KT. 
SEAS 8 TO 13 FT. ELSEWHERE FROM 11N TO 16N BETWEEN 69W AND 79W 
NE TO E WINDS 20 TO 25 KT. SEAS TO 10 FT. REMAINDER OF AREA FROM 
10.5N TO 15N BETWEEN 78W AND 81W WINDS 20 KT OR LESS. SEAS TO 9 
FT IN NE TO E SWELL.
.12 HOUR FORECAST FROM 11N TO 14N BETWEEN 73W AND 77W NE TO E 
WINDS 25 TO 30 KT. SEAS 9 TO 14 FT. ELSEWHERE FROM 11N TO 17N 
BETWEEN 69W AND 80W NE TO E WINDS 20 TO 25 KT. SEAS TO 11 FT. 
REMAINDER OF AREA FROM 10N TO 17N BETWEEN 76W AND 82W WINDS 20 
KT OR LESS. SEAS TO 9 FT IN NE TO E SWELL.
.24 HOUR FORECAST FROM 11N TO 12.5N BETWEEN 74W AND 76W NE WINDS 
30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 11N TO 16N BETWEEN 
72W AND 78W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. FROM 10N 
TO 17N BETWEEN 78W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT 
IN NE TO E SWELL. 
.36 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E 
WINDS 25 TO 30 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 10.5N TO 16N 
BETWEEN 71W AND 81W NE TO E WINDS 20 TO 25 KT. SEAS TO 11 FT. 
REMAINDER OF AREA FROM 10N TO 15N BETWEEN 76W AND 83W WINDS 20 
KT OR LESS. SEAS TO 10 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 11N TO 14N BETWEEN 69W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 9 FT. FROM 10N TO 15N BETWEEN 77W AND 
83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC 24 HOUR FORECAST FROM 14N TO 19N E OF 40W 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 S OF 21N BETWEEN 70W AND 73W E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W E WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W E WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.