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Marine Forecast
Expires:No;;114055
FZNT01 KWBC 171606
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC SAT FEB 17 2018 

CCODE/1:31:04:01:00/AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 1200 UTC FEB 17 
24 HOUR FORECAST VALID 1200 UTC FEB 18 
48 HOUR FORECAST VALID 1200 UTC FEB 19 

.WARNINGS. 

...HURRICANE FORCE WIND WARNING... 
.LOW 48N44W 983 MB MOVING NE 25 KT AND RAPIDLY INTENSIFYING. 
FRONT FROM 48N42W TO 40N50W TO 34N64W. WITHIN 120 NM E OF THE 
FRONT N OF 41N WINDS 40 TO 50 KT. SEAS 18 TO 26 FT. ELSEWHERE 
WITHIN 420 NM E OF THE FRONT AND OVER WATERS W OF THE FRONT TO 
65W WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. 
.24 HOUR FORECAST LOW 58N37W 957 MB. WITHIN 480 NM SW AND 180 NM 
W QUADRANTS...AND WITHIN 180 NM E AND 240 NM SE OF THE GREENLAND 
COAST WINDS 45 TO 60 KT. SEAS IN ICE FREE WATERS 18 TO 36 FT. 
ELSEWHERE WITHIN 840 NM S AND SW AND 420 NM NW QUADRANTS WINDS 
30 TO 45 KT. SEAS 11 TO 26 FT. 
.36 HOUR FORECAST LOW E OF AREA NEAR 59N33W 955 MB. WITHIN 300 
NM SW QUADRANT AND 90 NM E AND SE OF THE GREENLAND COAST WINDS 
50 TO 65 KT. SEAS IN ICE FREE WATERS 24 TO 38 FT.   
.48 HOUR FORECAST LOW E OF AREA NEAR 62N30W 960 MB. WITHIN 420 
NM SW QUADRANT WINDS 40 TO 55 KT. SEAS 20 TO 33 FT. ELSEWHERE 
WITHIN 180 NM W QUADRANT AND OVER FORECAST WATERS BETWEEN 52N TO 
61N WINDS 25 TO 40 KT. SEAS 11 TO 24 FT.  

...HURRICANE FORCE WIND WARNING... 
.24 HOUR FORECAST INTENSIFYING LOW 40N66W 998 MB. WITHIN 240 NM 
S AND SE QUADRANTS WINDS 40 TO 55 KT. SEAS 12 TO 20 FT. 
ELSEWHERE WITHIN 240 NM NE...420 NM SE...AND 540 NM SW QUADRANTS 
WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. 
.36 HOUR FORECAST LOW 41N56W 982 MB. WITHIN 120 NM W AND SW 
SEMICIRCLES WINDS 60 TO 75 KT. SEAS 26 TO 38 FT.  
.48 HOUR FORECAST LOW 42N46W 979 MB. WITHIN 240 NM S AND 180 NM 
W AND NW QUADRANTS WINDS 55 TO 70 KT. SEAS 26 TO 46 FT. ALSO 
WITHIN 240 NM NW SEMICIRCLE...AND 360 NM S AND 300 NM E 
QUADRANTS WINDS 40 TO 55 KT. SEAS 20 TO 38 FT. ELSEWHERE WITHIN 
660 NM SW...360 NM NW AND N...540 NM E...AND 420 NM SE QUADRANTS 
WINDS 25 TO 40 KT. SEAS 12 TO 28 FT.  

Storm Warning - ... 
.LOW 53N47W 987 MB MOVING E 15 KT. WITHIN 300 NM N AND NE 
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT. 
.12 HOUR FORECAST LOW 53N46W 978 MB. WITHIN 240 NM W AND SW 
QUADRANTS WINDS 35 TO 50 KT. SEAS IN ICE FREE WATERS 16 TO 27 
FT. .24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 58N37W.

Gale Warning - ... 
.LOW 58N56W 991 MB NEARLY STATIONARY. WITHIN 240 NM NE AND 360 
NM SW SEMICIRCLES WINDS 25 TO 40 KT. SEAS IN ICE FREE WATERS 8 
TO 14 FT. 
.24 HOUR FORECAST LOW 59N58W 1002 MB. WITHIN 180 NM S QUADRANT 
AND 120 NM NW SEMICIRCLE WINDS 20 TO 30 KT. SEAS IN ICE FREE 
WATERS 8 TO 14 FT. 
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW 
62N30W.

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE FROM 46N57W TO 
47N54W AND W AND NW OF A LINE FROM 54N51W TO 59N56W TO 61N50W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A 
LINE FROM 48N45W TO 59N56W TO 61N50W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE 
FROM 53N50W TO 59N52W TO 62N51W.

.SYNOPSIS AND FORECAST. 

.COMPLEX LOW WITH MEAN CENTER NEAR 62N38W 992 MB NEARLY 
STATIONARY. WITHIN 240 NM OF CENTER WINDS 20 TO 30 KT. SEAS IN 
ICE FREE WATERS 8 TO 14 FT. 
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS ABSORBED BY LOW 
58N37W. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM SE OF 
A LINE FROM 51N35W TO 46N48W TO 42N51W.
.24 HOUR FORECAST CONDITIONS IMPROVED. 

.24 HOUR FORECAST HIGH 41N49W 1031 MB. 
.48 HOUR FORECAST HIGH E OF AREA. 

.48 HOUR FORECAST HIGH 39N68W 1036 MB. 

.FORECASTER ACHORN. 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 1200 UTC SAT FEB 17.
24 HOUR FORECAST VALID 1200 UTC SUN FEB 18.
48 HOUR FORECAST VALID 1200 UTC MON FEB 19.

.WARNINGS.

...CARIBBEAN GALE WARNING...  
.FROM 10.5N TO 13N BETWEEN 74W AND 77W NE WINDS 30 TO 35 KT. 
SEAS 11 TO 14 FT. ELSEWHERE FROM 09.5N TO 17.5N BETWEEN 70W AND 
80W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER 
CARIBBEAN FROM 09N TO 16N BETWEEN 77W AND 84W WINDS 20 KT OR 
LESS. SEAS TO 10 FT IN NE TO E SWELL. WINDWARD PASSAGE NE WINDS 
20 TO 25 KT. SEAS LESS THAN 8 FT.
.06 HOUR FORECAST FROM 10.5N TO 13N BETWEEN 74W AND 77W NE WINDS 
25 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 
70W AND 81W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. 
REMAINDER CARIBBEAN S OF 17N BETWEEN 76W AND 83W WINDS 20 KT OR 
LESS. SEAS TO 10 FT IN E SWELL. WINDWARD PASSAGE NE WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST FROM 10.5N TO 13N BETWEEN 74W AND 77W NE WINDS 
30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 10N TO 18N BETWEEN 
70W AND 81W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. S OF 17N 
E OF 70W...INCLUDING THE ATLC PASSAGES...E WINDS 20 TO 25 KT. 
SEAS TO 8...EXCEPT LESS THAN 8 FT IN ATLC PASSAGES. REMAINDER 
CARIBBEAN S OF 16N BETWEEN 76W AND 83W WINDS 20 KT OR LESS. SEAS 
TO 10 FT IN E SWELL. WINDWARD PASSAGE NE WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE WINDS 
25 TO 30 KT. SEAS 10 TO 12 FT. ELSEWHERE FROM 10N TO 17.5N 
BETWEEN 70W AND 80W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. 
REMAINDER CARIBBEAN S OF 16N BETWEEN 76W AND 83W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN NE TO E SWELL.
.36 HOUR FORECAST FROM 10.5N TO 13N BETWEEN 73.5W AND 76W NE 
WINDS 30 TO 35 KT. SEAS 12 TO 15 FT. ELSEWHERE FROM 09.5N TO 
17.5N BETWEEN 70W AND 80W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 
11 FT. E OF 70W...INCLUDING THE ATLC PASSAGES...E WINDS 20 TO 25 
KT. SEAS 8 FT. REMAINDER CARIBBEAN S OF 16N BETWEEN 76W AND 83W 
WINDS 20 KT OR LESS. SEAS TO 10 FT IN E SWELL. WINDWARD PASSAGE 
NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.ATLC N OF 22N E OF 38W WINDS 20 KT OR LESS. SEAS 8 FT PRIMARILY 
IN N SWELL. 
.24 HOUR FORECAST FROM 10N TO 19N W OF 50W NE TO E WINDS 20 TO 
25 KT. SEAS 8 FT. 
.48 HOUR FORECAST S OF 20N E OF 50W...AND S OF 23N BETWEEN 50W 
AND 65W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. 

.ATLC S OF 21N BETWEEN 70W AND 74W...INCLUDING ATLC APPROACH TO 
WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.  
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST S OF 21N BETWEEN 70W AND 74W...INCLUDING ATLC 
APPROACH TO WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.  
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST S OF 23N BETWEEN 70W AND 80W...INCLUDING ATLC 
APPROACH TO WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT. 
.48 HOUR FORECAST S OF 24N BETWEEN 70W AND 80W...INCLUDING ATLC 
APPROACH TO WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS 
TO 8 FT OUSIDE THE BAHAMAS. 

.ATLC 48W HOUR FORECAST COLD FRONT FROM 31N44W TO 28N50W TO 
29N62W. N OF FRONT N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. 

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.


 

 


US Forecasts are Public Domain and derived from the National Weather Service - (IWIN)
and the National Oceanic Atmospheric Administration (NOAA)
All weather information provided here should be used with caution.
We cannot guarantee that the data provided here is 100% accurate or up to date!


Sandy Bay Yacht Club, P.O. Box 37, 5 T Wharf, Rockport, MA 01966  USA
(978)546-9433 Clubhouse, (978)546-6240 Office

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