High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 200958
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC FRI APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 20.
24 HOUR FORECAST VALID 0600 UTC APR 21.
48 HOUR FORECAST VALID 0600 UTC APR 22.

.WARNINGS.

...GALE WARNING...
.LOW 44N61W 996 MB MOVING NE 20 KT. WITHIN 480 NM S QUADRANT
WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 50N54W 996 MB. WITHIN 300 NM SW
QUADRANT...AND 300 NM SE OF FRONT FROM 44N48W TO 36N55W WINDS 25
TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 54N49W 991 MB. FRONT FROM 48N35W TO 44N40W
TO 38N46W. WITHIN 420 NM SE AND 420 NM N AND NW QUADRANTS...AND
240 NM SE OF FRONT WINDS 25 TO 35 KT. SEAS 8 TO 16 FT.

...GALE WARNING...
.LOW E OF AREA 50N33W 1004 MB MOVING NE 30 KT. WITHIN 420 NM SW
QUADRANT WINDS 25 TO 40 KT. SEAS 10 TO 16 FT.
.18 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL E OF AREA.

.SYNOPSIS AND FORECAST.

.LOW 53N49W 996 MB MOVING E 10 KT. WITHIN 360 NM N AND NW...AND
300 NM SW AND 360 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO
15 FT.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED ABOVE
WITH LOW 50N54W.

.LOW E OF AREA 62N32W 1002 MB MOVING SW 10 KT. WITHIN 120 NM NW
OF A LINE FROM 63N35W TO 58N42W WINDS 20 TO 30 KT. SEAS 8 TO 12
FT.
.24 HOUR FORECAST LOW DISSIPATED. WITHIN 120 NM NW OF A LINE
FROM 63N35W TO 59N41W WINDS TO 25 KT. SEAS TO 10 FT.
.30 HOUR FORECAST CONDITIONS DIMINISHED.

.LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE FROM 59N59W TO
62N54W.
.24 HOUR FORECAST CONDITIONS IMPROVED.
.48 HOUR FORECAST LIGHT FREEZING SPRAY NW OF A LINE FROM 61N56W
TO 65N53W.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 46N
BETWEEN 50W AND 62W.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 49N BETWEEN 37W AND 51W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.HIGH 35N37W 1033 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 35N37W 1032 MB.
.48 HOUR FORECAST HIGH 35N36W 1030 MB.

.FORECASTER ROWLAND. 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 FRI APR 20.
24 HOUR FORECAST VALID 0600 UTC SAT APR 21.
48 HOUR FORECAST VALID 0600 UTC SUN APR 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC E OF LINE FROM 31N40W TO 19N63W TO 07N49W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN N SWELL.
.24 HOUR FORECAST E OF LINE FROM 31N36W TO 19N61W TO 07N54W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N SWELL.
.48 HOUR FORECAST SE OF LINE FROM 26N35W TO 09N57W WINDS 20 KT
OR LESS. SEAS TO 8 FT IN N SWELL.

.ATLC 06 HOUR FORECAST COLD FRONT FROM 31N73W TO 28N80W. N OF
29N W OF FRONT NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 31N61W TO 27N69W THEN
STATIONARY TO 26N80W. N OF 28N W OF 76W NE TO E WINDS 20 TO 25
KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N57W TO 27N64W...THEN
STATIONARY TO 26N73W TO 26N80W. FROM 26N TO 28.5N W OF 74W E
WINDS 20 TO 25 KT. SEAS TO 9 FT.

.CARIBBEAN FROM 11N TO 15N BETWEEN 68W AND 78W NE TO E WINDS 20
TO 30 KT. SEAS 8 TO 12 FT.  ELSEWHERE FROM 10.5N TO 16N BETWEEN
69W AND 80W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT E SWELL.
.24 HOUR FORECAST FROM 11N TO 15N BETWEEN 71W AND 79W NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 10N TO 17N
BETWEEN 71W AND 82W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.48 HOUR FORECAST FROM 11N TO 14N BETWEEN 72W AND 78W NE WINDS
20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 10.5N TO 15.5N
BETWEEN 74W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E
SWELL.

.GULF OF MEXICO 24 HOUR FORECAST STATIONARY FRONT FROM 26N82W TO
26N92W. N OF FRONT E OF 86W E WINDS 20 TO 25 KT. SEAS LESS THAN
8 FT.
.48 HOUR FORECAST WARM FRONT FROM 27N83W TO 29N90W. N OF FRONT E
TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.


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