High Seas Forecast
Issued by NWS

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227
FZNT01 KWBC 171616
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC TUE OCT 17 2017

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

ATLANTIC ICEBERG ANALYSIS AND OUTLOOK PRODUCTS...COURTESY OF
THE U.S. COAST GUARD INTERNATIONAL ICE PATROL...CAN BE FOUND
ON THE OCEAN PREDICTION CENTER WEB PAGE AT
HTTP://WWW.OPC.NCEP.NOAA.GOV/ATL_TAB.SHTML(LOWERCASE).

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE
PROBLEM IS TAKING PLACE.

SECURITE

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

SYNOPSIS VALID 1200 UTC OCT 17
24 HOUR FORECAST VALID 1200 UTC OCT 18
48 HOUR FORECAST VALID 1200 UTC OCT 19

.WARNINGS.

...STORM WARNING...
.LOW 61N42W 986 MB MOVING NE 05 KT. OVER FORECAST WATERS N OF
64N AND E OF GREENLAND WINDS 35 TO 50 KT. SEAS 14 TO 21 FT.
ELSEWHERE N OF 62N AND E OF GREENLAND AND WITHIN 180 NM SE
SEMICIRCLE  WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 62N37W 991 MB. N OF 65N AND E OF 37W WINDS
40 TO 50 KT. SEAS 14 TO 20 FT. ELSEWHERE N OF 64N E OF 40W AND
WITHIN 180 NM S SEMICIRCLE WINDS 25 TO 35 KT. N OF 64N SEAS 9 TO
16 FT AND WITHIN 180 NM S SEMICIRCLE SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW 61N36W 993 MB. N OF 65N E OF GREENLAND
WINDS 30 TO 45 KT. SEAS 10 TO 18 FT. ELSEWHERE FROM 58N TO 61N E
OF 52W AND N OF 64N E OF GREENLAND WINDS 25 TO 35 KT. SEAS 9 TO
14 FT.

...GALE WARNING...
.LOW 53N35W 987 MB MOVING NE 25 KT. OVER FORECAST WATERS FROM
47N TO 54N E OF 41W WINDS 30 TO 45 KT. SEAS 13 TO 22 FT.
ELSEWHERE FROM 41N TO 55N E OF 44W WINDS 20 TO 30 KT. SEAS 8 TO
14 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.OVER FORECAST WATERS WITHIN 300 NM NW OF A FRONT FROM 37N67W TO
34N71W TO 31N76W AREA OF N TO NE WINDS 25 TO 35 KT. SEAS 8 TO 15
FT.
.24 HOUR FORECAST WITHIN 180 NM NW OF A FRONT FROM 33N63W TO
31N70W AREA OF NE WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST WITHIN 180 NM NW OF A LINE FROM 33N55W TO
31N70W AREA OF NE WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.

...GALE WARNING...
.LOW 44N55W 1009 MB MOVING NE 40 KT. WITHIN 420 NM SE AND E OF A
FRONT FROM 45N49W TO LOW CENTER TO 37N65W WINDS 25 TO 35 KT.
SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 48N31W 996 MB. OVER FORECAST WATERS FROM
38N TO 49N BETWEEN 44W AND 35W WINDS 25 TO 40 KT. SEAS 10 TO 16
FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.LOW 34N67W 1012 MB MOVING NE 25 KT. OVER FORECAST WATERS FROM
31N TO 35N BETWEEN 63W AND 67W AREA OF S WINDS 25 TO 35 KT. SEAS
TO 11 FT.
.24 HOUR FORECAST LOW 39N55W 1011 MB. WITHIN 180 NM SE AND 120
NM NW SEMICIRCLES WINDS 25 TO 40 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 45N36W 989 MB. OVER FORECAST WATERS WITHIN
360 NM S...420 NM W...300 NM N AND NE QUADRANTS WINDS 30 TO 45
KT. SEAS 10 TO 19 FT. ELSEHWERE FROM 34N TO 50N BETWEEN 35W AND
47W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST INLAND LOW 53N64W 1003 MB. OVER FORECAST
WATERS WITHIN 480 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS LESS
THAN 8 FT. .48 HOUR FORECAST LOW 51N50W 1013 MB. OVER FORECAST
WATERS FROM 42N TO 50N BETWEEN 50W AND 56W WINDS TO 25 KT. SEAS
TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM SE OF
A LINE FROM 45N45W TO 45N55W.
.24 HOUR FORECAST CONDITIONS IMPROVING.

.HIGH 33N37W 1032 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 32N36W 1031 MB.
.48 HOUR FORECAST HIGH 31N35W 1027 MB.

.24 HOUR FORECAST HIGH 40N69W 1027 MB.
.48 HOUR FORECAST HIGH 42N62W 1028 MB.

.FORECASTER SIENKIEWICZ. 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 TUE OCT 17.
24 HOUR FORECAST VALID 1200 UTC WED OCT 18.
48 HOUR FORECAST VALID 1200 UTC THU OCT 19.

.WARNINGS.

...GULF OF MEXICO GALE WARNING...
.COLD FRONT FROM 28N81.5W TO 24N92W TO 18N94W. S OF 21.5N WITHIN
75 NM OF COAST NW WINDS 30 TO 40 KT. SEAS 10 TO 16 FT. ELSEWHERE
S OF 26N W OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS TO 11 FT. N
OF 26N WITHIN 120 NM NW OF FRONT NE WINDS 20 TO 25 KT. SEAS
TO 8 FT.
.12 HOUR FORECAST STATIONARY FRONT FROM 28N81.5W TO 27N90W TO
18NN94W. S OF 22N W OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS 9
TO 13 FT. ELSEWHERE N OF 22N WITHIN 90 NM OF FRONT N TO NE WINDS
20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FRONT DISSIPATED. S OF 21N W OF 94W NW TO N
WINDS 20 TO 25 KT. SEAS TO 10 FT. FROM 26N TO 29N E OF 86W NE
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST CONDITIONS TO IMPROVE. WINDS 20 KT OR LESS.
SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N76W TO 28N81.5W. N OF FRONT NE WINDS 20
TO 25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N74W TO 28N81.5W. N OF
FRONT NE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE WITHIN 90
NM SE OF FRONT WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL.
.48 HOUR FORECAST FRONTAL TROUGH FROM 31N67W TO 28N76W TO 25N80W.
N OF 29N W OF 77W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL.

.ATLC TROUGH FROM 31N69W TO 23N74W. N OF 27N BETWEEN 64W AND 68W
S WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 22N TO 31N
BETWEEN 62W AND 72W WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY
IN SE SWELL.
.24 HOUR FORECAST TROUGH FROM 31N66W TO 24N74W. WINDS 20 KT OR
LESS. SEAS LESS THAN 8 FT.

.ATLC FROM 11N TO 22N BETWEEN 51W AND 66W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN NE SWELL. FROM 18N TO 26N E OF 42W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT IN E SWELL.
.24 HOUR FORECAST FROM 10N TO 15N E WINDS 20 TO 25 KT. SEAS 8 TO
10 FT. ELSEWHERE S OF 20N BETWEEN 45W AND 63W WINDS 20 KT OR
LESS. SEAS TO 9 FT IN NE SWELL. FROM 12N TO 26N E OF 43W WINDS
20 KT OR LESS. SEAS 8 TO 9 FT IN E SWELL.
.48 HOUR FORECAST FROM 08N TO 14N BETWEEN 55W AND 62W E WINDS 20
TO 25 KT. SEAS 8 TO 9 FT IN E SWELL. ELSEWHERE S OF 19N BETWEEN
42W AND 62W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL.

.CARIBBEAN S OF 14N BETWEEN 68W AND 72W E WINDS 20 TO 30 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST S OF 14N BETWEEN 69W AND 76W E WINDS 20 TO 25
KT. SEAS TO 9 FT.  ELSEWHERE FROM 11N TO 16N BETWEEN 72W AND 76W
WINDS 20 KT OR LESS. SEAS TO 8 FT IN E SWELL.
.48 HOUR FORECAST S OF 17N E OF 73W E TO SE WINDS 20 TO 25 KT.
SEAS TO 10 FT.

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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