High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 270933
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC FRI APR 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 27.
24 HOUR FORECAST VALID 0600 UTC APR 28.
48 HOUR FORECAST VALID 0600 UTC APR 29.

.WARNINGS.

...STORM WARNING...
.OVER FORECAST WATERS FROM 39N TO 58N BETWEEN 51W AND 62W AREA
OF S WINDS 25 TO 35 KT. SEAS 12 TO 18 FT.
.12 HOUR FORECAST LOW 60N56W 991 MB. WITHIN 240 NM E AND NE
QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 18 FT.
.24 HOUR FORECAST LOW N OF AREA. FRONT TO EXTEND FROM 67N51W TO
60N47W TO 56N42W TO 47N44W. WITHIN 240 NM E OF THE FRONT...AND
300 NM W OF THE FRONT N OF 57N WINDS 25 TO 35 KT. SEAS 9 TO 15
FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS N OF AREA.

...GALE WARNING...
.FROM 32N TO 36N BETWEEN 75W AND 78W WINDS TO 25 KT. SEAS TO 8
FT.
.24 HOUR FORECAST FROM 33N TO 43N BETWEEN 58W AND 70W WINDS TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST NEW LOW 41N64W 1008 MB. WITHIN 420 NM S AND SE
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.

.SYNOPSIS AND FORECAST.

.OVER ICE FREE FORECAST WATERS N OF 60N BETWEEN 49W AND 59W
WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST CONDITIONS N OF AREA.

.48 HOUR FORECAST NEW LOW 55N54W 1010 MB. WITHIN 300 NM N
SEMICIRCLE AND 420 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 9
FT.

.48 HOUR FORECAST NEW LOW 66N35W 1000 MB. OVER ICE FREE FORECAST
WATERS WITHIN 240 NM SW QUADRANT...AND FROM 57N TO 61N BETWEEN
37W AND 48W WINDS 20 TO 30 KT. SEAS TO 12 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 47N
BETWEEN 54W AND 60W AND WITHIN 120 NM OF 49N62W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM E AND SE OF A LINE
FROM 57N42W TO 52N44W TO 44N60W TO 43N71W...AND WITHIN 60 NM OF
48N62W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 54N BETWEEN 45W AND 68W.

.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY W AND NW OF A
LINE FROM 57N58W TO 63N50W TO 67N50W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 59N AND
W OF 49W.

.HIGH 41N39W 1034 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 40N38W 1035 MB.
.48 HOUR FORECAST HIGH 38N42W 1035 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 FRI APR 27.
24 HOUR FORECAST VALID 0600 UTC SAT APR 28.
48 HOUR FORECAST VALID 0600 UTC SUN APR 29.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC LOW PRES NEAR 27N52W 1018 MB. FROM 25N TO 29N BETWEEN 51W
AND 55W WINDS 20 KT OR LESS. SEAS 8 FT IN N SWELL.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 29N58W TO 24N56W.
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC 48 HOUR FORECAST S OF 12N BETWEEN 49W AND 57W WINDS 20 KT
OR LESS. SEAS 8 FT IN NE TO E SWELL.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.



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