High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 192138
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU APR 19 2018

CCODE/1:31:04:01:00/AOW+AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE).

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
AMERICAN ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.SHTML

SECURITE

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

SYNOPSIS VALID 1800 UTC APR 19.
24 HOUR FORECAST VALID 1800 UTC APR 20.
48 HOUR FORECAST VALID 1800 UTC APR 21.

.WARNINGS.

...GALE WARNING...
.LOW 47N42W 1010 MB. WITHIN 300 NM SE AND 420 NM S QUADRANTS
WINDS 25 TO 35 KT. SEAS 10 TO 16 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.LOW 40N69W 999 MB MOVING NE 25 KT. WITHIN 360 NM SE AND 660 NM
SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 47N58W 994 MB. WITHIN 180 NM SE QUADRANT
AND WITHIN 240 NM SE OF A FRONT FROM 44N52W TO 38N58W WINDS 25
TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN 900 NM SE AND
S...AND 840 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 52N53W 992 MB. WITHIN 240 NM SE OF A FRONT
TO EXTEND FROM 47N41W TO 37N48W WINDS 25 TO 40 KT. SEAS 9 TO 18
FT. ELSEWHERE OVER ICE FREE FORECAST WATERS WITHIN 420 NM OF LOW
CENTER WINDS 20 TO 30 KT. SEAS TO 10 FT.

.SYNOPSIS AND FORECAST.

.LOW E OF AREA 63N31W 999 MB MOVING SW 15 KT. OVER FORECAST
WATERS N OF 60N E OF GREENLAND AND WITHIN 120 NM SE OF A LINE
FROM 60N44W TO 59N49W WINDS 20 TO 30 KT. SEAS 10 TO 16 FT.
.24 HOUR FORECAST LOW DISSIPATED. WITHIN 180 NM E OF GREENLAND
COAST N OF 60N WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.N OF 60N W OF 55W AREA OF NW WINDS 20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.LOW 53N52W 992 MB MOVING E 10 KT. WITHIN 240 NM NE...420 NM SE
AND S...AND 360 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14
FT.
.24 HOUR FORECAST LOW 53N44W 1004 MB. WITHIN 420 NM SE QUADRANT
WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 59N59W TO
64N53W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 62N AND
W OF 55W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.24 HOUR FORECAST. DENSE FOG VSBY OCCASIONALLY LESS THAN 1 NM
FROM 43N TO 49N BETWEEN 46W AND 53W.
.48 HOUR FORECAST DENSE FOG WITHIN 90 NM E OF A LINE FROM 51N40W
TO 48N37W.

.HIGH 34N37W 1033 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 35N37W 1033 MB.
.48 HOUR FORECAST HIGH 35N37W 1030 MB.

.FORECASTER KREKELER. 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 APR 19.
24 HOUR FORECAST VALID 1800 UTC FRI APR 20.
48 HOUR FORECAST VALID 1800 UTC SAT APR 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN AREA BOUNDED 31N44W TO 31N35W TO 07N35W TO 07N45W
TO 20N60W TO 31N44W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT
PRIMARILY IN N SWELL...HIGHEST SEAS NEAR 28N35W.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 31N35W TO 07N35W TO
06N52W TO 19N62W TO 31N35W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
PRIMARILY IN N SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 28N35W TO 07N35W TO
06N53W TO 10N54W TO 28N35W WINDS 20 KT OR LESS. SEAS TO 9 FT IN
N SWELL.

.ATLC 12 HOUR FORECAST COLD FRONT FROM 31N76W TO 28N81W. N OF
29N W OF FRONT NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 31N68W TO 27N72W THEN
STATIONARY TO 26N80W. S OF 21N BETWEEN 70W AND 73W E WINDS 20 TO
25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST COLD FRONT FROM 31N61W TO 27N68W THEN
STATIONARY TO 27N80W. FROM 26N TO 29N W OF 75W NE TO E WINDS 20
TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N58W TO 27N65W THEN
STATIONARY TO 25N72W THEN WEAK WARM FRONT TO 27N80W. FROM 26N TO
28N W OF 76W WINDS 20 KT OR LESS. SEAS TO 8 FT.

.CARIBBEAN FROM 10.5N TO 15N BETWEEN 63W AND 78W NE TO E WINDS
20 TO 25 KT. SEAS TO 10 FT.  ELSEWHERE FROM 10N TO 17N BETWEEN
68W AND 82W WINDS 20 KT OR LESS. SEAS TO 9 FT IN E SWELL.
.24 HOUR FORECAST FROM 11.5N TO 15N BETWEEN 70W AND 78W NE TO E
WINDS 20 TO 25 KT. SEAS TO 11 FT. ELSEWHERE FROM 10N TO 17N
BETWEEN 69W AND 82W WINDS 20 KT OR LESS. SEAS TO 10 FT IN E
SWELL.
.48 HOUR FORECAST FROM 11N TO 14.5N BETWEEN 74W AND 81W NE TO E
WINDS 20 TO 25 KT. SEAS TO 10 FT. ELSEWHERE FROM 10.5N TO 16.5N
BETWEEN 74W AND 83W WINDS 20 KT OR LESS. SEAS TO 9 FT IN E
SWELL.

.GULF OF MEXICO 36 HOUR FORECAST STATIONARY FRONT FROM 26N82W TO
26N88W THEN WEAK WARM FRONT TO 28N96W. E OF 86W N OF STATIONARY
FRONT NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WARM FRONT FROM 26N81W TO 29N95W. NE OF FRONT
E TO SE WINDS 20 TO 25 KT. 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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