High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 200357
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT JAN 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC JAN 20
24 HOUR FORECAST VALID 0000 UTC JAN 21
48 HOUR FORECAST VALID 0000 UTC JAN 22

.WARNINGS.

...STORM WARNING...
.LOW 44N48W 980 MB MOVING NE 45 KT. WITHIN 360 NM E AND 300 NM S
QUADRANTS WINDS 40 TO 50 KT. SEAS 20 TO 27 FT. ELSEWHERE OVER
FORECAST WATERS WITHIN 660 NM NE...720 NM SE...840 NM SW...AND
240 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 20 FT.
.24 HOUR FORECAST LOW E OF AREA 58N29W 975 MB. FROM 45N TO 58N E
OF 40W WINDS 20 TO 30 KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST CONDITIONS E OF AREA.

...STORM WARNING...
.LOW 56N43W 985 MB MOVING NW 15 KT. OVER ICE FREE FORECAST
WATERS WITHIN 660 NM NE...60 NM SE...420 NM W...AND 300 NM NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.12 HOUR FORECAST LOW 58N46W 982 MB. BETWEEN 60 NM AND 180 NM N
QUADRANT WINDS 40 TO 55 KT. SEAS 15 TO 20 FT.
.24 HOUR FORECAST LOW 59N51W 977 MB. WITHIN 180 NM OF CENTER
EXCEPT 540 NM NE QUADRANT WINDS 30 TO 45 KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST LOW 58N57W 984 MB. FROM 56N TO 66N W OF 54W
WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...STORM WARNING...
.48 HOUR FORECAST LOW 59N48W 987 MB. WITHIN 60 NM N OF A LINE
FROM THE LOW TO 60N41W WINDS 40 TO 50 KT. SEAS 18 TO 29 FT.
ELSEWHERE OVER ICE FREE FORECAST WATERS WITHIN 540 NM NE AND 120
NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 20 FT.

...GALE WARNING...
.24 HOUR FORECAST INLAND LOW 49N58W 988 MB. OVER FORECAST WATERS
WITHIN 720 NM SE AND 960 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS
8 TO 15 FT.
.48 HOUR FORECAST LOW 55N38W 978 MB. WITHIN 120 NM E...960 NM
S...AND 1080 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 23 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE FROM 65N53W TO
64N58W AND W OF A LINE FROM 58N57W TO 52N51W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 66N55W TO 64N56W AND FROM 53N TO 57N W OF 52W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 66N55W TO 64N57W AND FROM 50N TO 55N W OF 52W.

.SYNOPSIS AND FORECAST.

.LOW INLAND 60N65W 1002 MB MOVING W 10 KT. OVER ICE FREE
FORECAST WATERS WITHIN 420 NM NE QUADRANT WINDS 20 TO 30 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 45N TO 51N E OF 38W.
.24 HOUR FORECAST CONDITIONS E OF AREA.

.FORECASTER BELL. 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 SAT JAN 20.
24 HOUR FORECAST VALID 0000 UTC SUN JAN 21.
48 HOUR FORECAST VALID 0000 UTC MON JAN 22.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.CARIBBEAN FROM 10N TO 15N BETWEEN 70W AND 81W NE TO E WINDS 20
TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 10N TO 16N BETWEEN 69W AND 77W NE WINDS
20 TO 30 KT. SEAS 8 TO 11 FT. FROM 0N TO 16N BETWEEN 77W AND 81W
WINDS 20 KT OR LESS. SEAS TO 9 FT IN E SWELL.
.30 HOUR FORECAST FROM 10N TO 13N BETWEEN 74W AND 76W NE WINDS
30 TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 18N BETWEEN
69W AND 78W NE TO E WINDS 20 TO 30 KT. SEAS TO 10 FT. FROM 10N
TO 16N BETWEEN 78W AND 82W WINDS 20 KT OR LESS. SEAS TO 9 FT IN
E SWELL.
.36 HOUR FORECAST FROM 10N TO 13N BETWEEN 74W AND 77W NE WINDS
25 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10.5N TO 18N
BETWEEN 69W AND 80W NE TO E WINDS 20 TO 30 KT. SEAS TO 11 FT.
FROM 10N TO 16N BETWEEN 80W AND 83W WINDS 20 KT OR LESS. SEAS TO
9 FT IN E SWELL.
.48 HOUR FORECAST FROM 10N TO 13N BETWEEN 72W AND 75W NE WINDS
25 TO 30 KT. SEAS TO 11 FT. ELSEWHERE FROM 10.5N TO 18N BETWEEN
70W AND 78W NE TO E WINDS 20 TO 25 KT. SEAS TO 10 FT. FROM 09.5N
TO 17N BETWEEN 78W AND 82W WINDS 20 KT OR LESS. SEAS TO 9 FT IN
E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N50W TO 23N65W THEN STATIONARY TO
20N75W. S OF 21N BETWEEN 72W AND 74W...INCLUDING ATLC APPROACH
TO WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
ELSEWHERE WITHIN AREA BOUNDED BY LINE FROM 31N70W TO 31N53W TO
21N71W TO 23N73W TO 31N70W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT
PRIMARILY IN NW SWELL...HIGHEST SEAS NEAR 31N58W.
.24 HOUR FORECAST COLD FRONT FROM 31N43W TO 25N51W THEN FRONTAL
TROUGH TO 22N77W. S OF 22N BETWEEN 71W AND 75W...INCLUDING ATLC
APPROACH TO WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT. WITHIN AREA BOUNDED BY LINE FROM 31N59W TO 31N40W TO
22N65W TO 21N62W TO 23N74W TO 26N61W TO 31N59W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT PRIMARILY IN NW SWELL...HIGHEST SEAS NEAR
31N44W.
.48 HOUR FORECAST TROUGH FROM 31N38W TO 23N43W...SECOND TROUGH
FROM 24N75W TO 22N78W. S OF 25N BETWEEN 76W AND 80W AND S OF 22N
BETWEEN 71W AND 75W...INCLUDING ATLC APPROACH TO WINDWARD
PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. WITHIN
AREA BOUNDED BY LINE FROM 31N45W TO 31N35W TO 28N35W TO 24N55W
TO 31N45W WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN NW
SWELL.

.ATLC WITHIN AREA BOUNDED BY 21N35W TO 10N35W TO 14N44W TO
21N35W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST FROM 12N TO 17N BETWEEN 35W AND 41W WINDS 20
KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.48 HOUR FORECAST FROM 10N TO 18N BETWEEN 49W AND 59W WINDS 20
KT OR LESS. SEAS TO 8 FT PRIMARILY IN N SWELL.

.CARIBBEAN FRONTAL TROUGH FROM 20N75W TO 16N83W. N OF 18N
BETWEEN 73W AND 81W...INCLUDING CARIBBEAN APPROACH TO WINDWARD
PASSAGE...NE WINDS 20 TO 25 KT. SEAS TO 8 FT. SCATTERED TSTMS S
OF 15N BETWEEN 79W AND 83.5W.
.24 HOUR FORECAST TROUGH DIFFUSE. N OF 17N BETWEEN 71W AND
83W...INCLUDING CARIBBEAN APPROACH TO WINDWARD PASSAGE...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST CONDITIONS MERGE.

.GULF OF MEXICO TROUGH FROM 28N97W TO 19N95W. N OF 25N WITHIN
120 NM E OF TROUGH SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST TROUGH INLAND. 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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