High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 180936
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC WED OCT 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC OCT 18
24 HOUR FORECAST VALID 0600 UTC OCT 19
48 HOUR FORECAST VALID 0600 UTC OCT 20

.WARNINGS.

...STORM WARNING...
.LOW E OF AREA 64N32W 988 MB MOVING SW 10 KT. OVER FORECAST
WATERS WITHIN 180 NM NW QUADRANT WINDS 35 TO 50 KT. SEAS 14 TO
22 FT. ELSEWHERE WITHIN 240 NM W AND NW QUADRANTS WINDS 25 TO 35
KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW 61N39W 992 MB. N OF 65N AND E OF GREENLAND
WINDS 30 TO 45 KT. SEAS 12 TO 21 FT. ELSEWHERE WITHIN 240 NM S
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 61N39W 992 MB. N OF 65N E OF
GREENLAND...AND WITHIN 300 NM S SEMICIRCLE WINDS 25 TO 40 KT.
SEAS 12 TO 18 FT.

...GALE WARNING...
.LOW 48N38W 996 MB MOVING NE 40 KT. OVER FORECAST WATERS WITHIN
300 NM E AND 540 NM S QUADRANTS WINDS 30 TO 45 KT. SEAS 12 TO 19
FT. ELSEWHERE WITHIN 360 NM E...600 NM S...480 NM W...AND 240 NM
N QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

...GALE WARNING...
.LOW 38N58W 1011 MB MOVING NE 35 KT. WITHIN 300 NM SE AND 240 NM
NW SEMICIRCLES WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 43N38W 1001 MB. WITHIN 300 NM S QUADRANT
WINDS 35 TO 45 KT. SEAS 12 TO 19 FT. ELSEWHERE FROM 35N TO 45N E
OF 48W WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW E OF AREA. OVER FORECAST WATERS E OF A
LINE FROM 53N42W TO 45N39W TO 39N36W WINDS 20 TO 30 KT. SEAS 10
TO 16 FT.

...GALE WARNING...
.48 HOUR FORECAST W OF A LINE FROM 63N62W TO 59N54W TO 55N49W TO
49N50W TO 44N58W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS WITHIN 480 NM W AND NW OF A FRONT FROM
36N60W TO 31N70W WINDS TO 25 KT. SEAS TO 12 FT.
.24 HOUR FORECAST WITHIN 300 NM W AND NW OF A FRONT FROM 34N56W
TO 31N70W WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST NEW LOW 35N63W 1011 MB. OVER FORECAST WATERS
WITHIN 300 NM OF LOW CENTER WINDS 20 TO 30 KT. SEAS TO 10 FT.

.12 HOUR FORECAST LOW INLAND 52N61W 1005 MB. OVER FORECAST
WATERS WITHIN 540 NM S QUADRANT WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 51N52W 1009 MB. WITHIN 540 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.24 HOUR FORECAST NEW LOW 65N54W 1003 MB. WITHIN 480 NM S
QUADRANT WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.HIGH 33N37W 1029 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH E OF AREA.

.24 HOUR FORECAST HIGH 40N67W 1027 MB.
.48 HOUR FORECAST HIGH 42N46W 1027 MB.

.FORECASTER NOLT. 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 OCT 18.
24 HOUR FORECAST VALID 0600 UTC THU OCT 19.
48 HOUR FORECAST VALID 0600 UTC FRI OCT 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N70W TO 26.5N80W. N OF 29N W OF 76W NE
WINDS 20 TO 25 KT. SEAS TO 11 FT.  ELSEWHERE W OF LINE FROM FROM
31N70W TO 28N80W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N65W TO 29N75W TO
23N81W. N OF LINE FROM 31N71W TO 28N80W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN NE SWELL.
.36 HOUR FORECAST LOW PRES NEAR 31N70W 1015 MB WITH DEVELOPING
COLD FRONT SW TO 26N76W. N OF LINE FROM 31N72W TO 28N79W WINDS
20 KT OR LESS. SEAS TO 8 FT IN NE SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N69W TO 23N75W. N OF 30N
BETWEEN 75W AND 80W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE
SWELL.

.ATLC WITHIN 180 NM OF 13N58W E WINDS 20 TO 25 KT. SEAS 9 FT.
ELSEWHERE WITHIN AREA BOUNDED BY LINE FROM 29N35W TO 14N35W TO
13N60W TO 29N35W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED
SWELL.
.24 HOUR FORECAST WITHIN 180 NM OF 13N60W E WINDS 20 TO 25 KT.
SEAS 9 FT. ELSEWHERE WITHIN AREA BOUNDED BY LINE FROM 23N35W
TO 11N35W TO 08N55W TO 18N62W TO 23N35W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN MIXED SWELL.
.48 HOUR FORECAST FROM 09N TO 16N E OF 60W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN MIXED SWELL.

.CARIBBEAN FROM 11N TO 15N BETWEEN 69W AND 77W E WINDS 20 TO 25
KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 11N TO 17N E OF 73W E WINDS 20 TO 25 KT.
SEAS TO 9 FT.
.48 HOUR FORECAST E OF 75W E TO SE WINDS 20 TO 25 KT. SEAS TO 10
FT.

.GULF OF MEXICO STATIONARY FRONT FROM 27N82W TO 25N91W TO
18N93W. S OF 21N BETWEEN 94W AND 97W NW WINDS 20 TO 25 KT. SEAS
TO 11 FT. WITHIN 120 NM N OF FRONT AND E OF 85W N TO NE WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST FRONT DISSIPATED. FROM 26N TO 29N E OF 85W NE
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 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 NELSON. NATIONAL HURRICANE CENTER.



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