High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 182133
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU JAN 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

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

SYNOPSIS VALID 1800 UTC JAN 18
24 HOUR FORECAST VALID 1800 UTC JAN 19
48 HOUR FORECAST VALID 1800 UTC JAN 20

.WARNINGS.

...STORM WARNING...
.LOW 37N68W 992 MB MOVING NE 35 KT. OVER FORECAST WATERS WITHIN
180 NM W AND SW SEMICIRCLES WINDS 50 TO 60 KT. SEAS 13 TO 22 FT.
ELSEWHERE WITHIN 300 NM S SEMICIRCLE AND 240 NM NW QUADRANT
WINDS 35 TO 50 KT. SEAS 10 TO 18 FT. ALSO S OF 40N BETWEEN 57W
AND 77W WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW 44N50W 984 MB. WITHIN 480 NM E AND 540 NM
S QUADRANTS WINDS 35 TO 50 KT. SEAS 21 TO 33 FT. ELSEWHERE
WITHIN 240 NM N...660 NM E...720 NM S...AND 420 NM W QUADRANTS
WINDS 25 TO 35 KT. SEAS 12 TO 21 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH NEW LOW TO FORM E OF AREA
NEAR 58N28W 971 MB. E OF A LINE FROM 50N46W TO 41N36W TO 33N40W
WINDS 25 TO 35 KT. SEAS 12 TO 21 FT.

...STORM WARNING...
.LOW 48N55W 1000 MB MOVING NE 20 KT. WITHIN 600 NM E AND 540 NM
S QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.12 HOUR FORECAST LOW 53N47W 990 MB. WITHIN 300 NM NE AND 720 NM
SE QUADRANTS...AND 240 NM W SEMICIRCLE WINDS 25 TO 35 KT. SEAS 9
TO 15 FT.
.24 HOUR FORECAST LOW 55N45W 986 MB. WITHIN 300 NM N AND 240 NM
S SEMICIRCLES WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.42 HOUR FORECAST LOW 58N44W 975 MB. WITHIN 240 NM N QUADRANT
WINDS 50 TO 60 KT. SEAS 16 TO 25 FT.
.48 HOUR FORECAST LOW 58N44W 973 MB. WITHIN 240 NM N AND NW
QUADRANTS WINDS 50 TO 60 KT. SEAS 18 TO 27 FT. ELSEWHERE WITHIN
240 NM OF LOW CENTER EXCEPT 360 NM NE QUADRANT WINDS 35 TO 50
KT. SEAS 12 TO 18 FT. ALSO WITHIN 480 NM NE...600 NM SE...420 NM
SW...AND 540 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.

...GALE WARNING...
.LOW E OF AREA 63N25W 987 MB MOVING SW 10 KT. WITHIN 600 NM SW
AND 360 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 12 TO 21 FT.
.24 HOUR FORECAST LOW E OF AREA 61N28W 997 MB. WITHIN 420 NM NW
QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.48 HOUR FORECAST FROM 36N TO 50N BETWEEN 57W AND 72W WINDS 25
TO 35 KT. SEAS 8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
W OF A LINE FROM 54N53W TO 61N56W TO 67N49W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 50N51W TO 56N54W TO 62N56W TO 67N50W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 51N49W TO 55N51W TO 61N58W TO 67N52W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 49N
BETWEEN 47W AND 56W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 50N E OF 37W...AND
WITHIN 180 NM SE OF A LINE FROM 48N44W TO 44N50W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.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 1800 UTC THU JAN 18.
24 HOUR FORECAST VALID 1800 UTC FRI JAN 19.
48 HOUR FORECAST VALID 1800 UTC SAT JAN 20.

.WARNINGS.

...ATLC GALE WARNING...
.COLD FRONT FROM 31N67W TO 26N70W TO 21N76W. N OF 30N WITHIN 180
NM W OF FRONT W TO NW WINDS 30 TO 35 KT. SEAS 10 TO 12 FT.
ELSEWHERE W OF FRONT TO 80W NW WINDS 20 TO 30 KT. SEAS 8 TO 12
FT OUTSIDE BAHAMAS. N OF 29N WITHIN 120 NM E OF FRONT SW WINDS
20 TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST COLD FRONT FROM 31N63W TO 26N68W TO 21N76W TO
21N75W. N OF OF 27N W OF FRONT TO 72W NW WINDS 20 TO 25 KT. SEAS
8 TO 13 FT. S OF 27N W OF FRONT TO 78W NE WINDS 20 TO 25 KT.
SEAS TO 8 FT. ELSEWHERE W OF FRONT TO 79W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN NW SWELL OUTSIDE BAHAMAS. N OF 29N WITHIN 180
NM E OF FRONT SW WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 31N54W TO 23N63W THEN
STATIONARY TO 20N71W. N OF 30N WITHIN 180 NM E OF FRONT SW WINDS
20 TO 25 KT. SEAS TO 8 FT. W OF FRONT TO 74W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN NW SWELL OUTSIDE BAHAMAS...HIGHEST N OF
29N.
.48 HOUR FORECAST COLD FRONT FROM 31N44W TO 23N60W THEN
STATIONARY TO 20N71W. W OF FRONT TO 70W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN NW SWELL...HIGHEST N OF 29N.

.SYNOPSIS AND FORECAST.

.ATLC FROM 11N TO 31N E OF 38W WINDS 20 KT OR LESS. SEAS TO 8 FT
IN NE SWELL.
.24 HOUR FORECAST FROM 09N TO 22N E OF 42W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN N TO NE SWELL.
.48 HOUR FORECAST FROM 08N TO 17N E OF 45W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN N TO NE SWELL.

.CARIBBEAN COLD FRONT FROM 23N76W TO 12N83W. NW OF FRONT AND S
OF 21N NE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST STATIONARY FRONT FROM 20N73W TO 12N83W. W OF
FRONT TO 85W NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FRONT DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.CARIBBEAN FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E WINDS 20
TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 10N TO 14N BETWEEN 73W AND 79W NE WINDS
20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST FROM 10N TO 17N BETWEEN 68W AND 80W NE WINDS
20 TO 30 KT. SEAS 8 TO 11 FT.

.GULF OF MEXICO S OF 24N BETWEEN 83W AND 95W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT. TROUGH FROM 23N96W TO 19N94W. WITHIN 60
NM W OF TROUGH NW WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST TROUGH FROM 27N97W TO 23N97W TO 20N95W. WITHIN
180 NM E OF TROUGH SE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST TROUGH DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

$$
.FORECASTER FORMOSA. NATIONAL HURRICANE CENTER.



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