High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 231535
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC MON APR 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC APR 23.
24 HOUR FORECAST VALID 1200 UTC APR 24.
48 HOUR FORECAST VALID 1200 UTC APR 25.

.WARNINGS.

...GALE WARNING...
.LOW 57N38W 990 MB MOVING NE 20 KT. OVER ICE FREE FORECAST
WATERS BETWEEN 180 NM AND 420 NM NE...180 NM AND 600 NM SE...240
NM AND 540 NM SW...AND 180 NM AND 360 NM NW QUADRANTS WINDS 25
TO 40 KT. SEAS 10 TO 20 FT.
.24 HOUR FORECAST LOW E OF AREA 61N26W 992 MB. WITHIN 720 NM SW
AND 360 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.OVER FORECAST WATERS S OF 34N W OF 75W WINDS TO 25 KT. SEAS TO
11 FT.
.24 HOUR FORECAST NEW LOW 33N79W 1014 MB. OVER FORECAST WATERS S
OF 37N BETWEEN 78W AND 70W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 37N75W 1007 MB. FROM 31N TO 40N BETWEEN
65W AND 75W WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 37N47W 1020 MB. WITHIN 420 NM N
SEMICIRCLE WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 35N45W 1014 MB. WITHIN 420 NM NW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS WITHIN 240 NM E OF A FRONT FROM 43N35W TO
37N43W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FRONT AND ASSOCIATED CONDITIONS E OF AREA.

.48 HOUR FORECAST LOW 57N52W 1005 MB. OVER ICE FREE FORECAST
WATERS BETWEEN 180 NM AND 660 NM SE QUADRANT WINDS TO 25 KT.
SEAS TO 9 FT.

.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY OVER ICE FREE
FORECAST WATERS N AND W OF A LINE FROM 62N54W TO 60N59W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N AND W OF A
LINE FROM 63N52W TO 61N55W.

.HIGH 40N70W 1033 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 40N64W 1034 MB.
.48 HOUR FORECAST HIGH 40N57W 1032 MB.

.FORECASTER SCOVIL. 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 1200 UTC MON APR 23.
24 HOUR FORECAST VALID 1200 UTC TUE APR 24.
48 HOUR FORECAST VALID 1200 UTC WED APR 25.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC STATIONARY FRONT FROM 31N53W TO 27N65W TO 26N73W TO 27N78W
AND WARM FRONT FROM 27N78W TO 31N81W. N OF 27N E OF WARM FRONT
TO 75W E TO SE WINDS 20 TO 25 KT...EXCEPT SE WINDS 25 TO 30 KT N
OF 30N. SEAS 8 TO 10 FT. S OF 21N BETWEEN 70W AND 74W...
INCLUDING APPROACHES TO THE WINDWARD PASSAGE...NE TO E WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT. SCATTERED SHOWERS AND TSTMS N OF
27N E OF WARM FRONT TO ABOUT 77W. WINDS AND SEAS COULD BE HIGHER
NEAR TSTMS.
.12 HOUR FORECAST STATIONARY FRONT FROM 31N53W TO 27N65W TO
27N77W AND WARM FRONT TO 31N81W. N OF 27N E OF WARM FRONT TO 75W
E TO SE WINDS 20 TO 25 KT...EXCEPT SE WINDS 25 TO 30 KT N OF
30N. SEAS 8 TO 11 FT. N OF 27N BETWEEN 63W AND 75W NE TO E WINDS
20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST STATIONARY FRONT FROM 31N52W TO 27N65W TO
29N74W AND WARM FRONT TO 31N76W. COLD FRONT FROM 31N79W TO
29N81W. N OF 29N BETWEEN 74W AND 79W SE TO S WINDS 20 TO 30 KT.
SEAS 8 TO 11 FT. N OF 27N BETWEEN 60W AND 74W E TO SE WINDS 20
TO 25 KT. SEAS 8 TO 9 FT.
.36 HOUR FORECAST COLD FRONT FROM 31N48W TO 26N55W...THEN
STATIONARY FRONT TO 27N70W AND WARM FRONT TO 31N75W. N OF 27N E
OF WARM FRONT TO 65W SE TO S WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N45W TO 25N55W...THEN
DISSIPATING STATIONARY FRONT TO 27N65W AND WARM FRONT TO 31N73W.
NEW COLD FRONT FROM 31N77W TO 24N81W. N OF 28N E OF WARM FRONT
TO 65W SE TO S WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

.ATLC FROM 14N TO 22N E OF 48W WINDS 20 KT OR LESS. SEAS 8 FT
PRIMARILY IN NE SWELL.
.24 HOUR FORECAST FROM 16N TO 20N E OF 40W WINDS 20 KT OR LESS.
SEAS TO 8 FT PRIMARILY IN NE SWELL.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 11N TO 15N BETWEEN 70W AND 77W NE TO E WINDS 20
TO 25 KT...EXCEPT 25 TO 30 KT WITHIN 90 NM OF THE COAST OF
COLOMBIA. SEAS 8 TO 10 FT. FROM 15N TO 17.5N BETWEEN 70W AND 74W
E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.06 HOUR FORECAST FROM 11N TO 13N BETWEEN 72W AND 76W NE TO E
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST FROM 11N TO 13.5N BETWEEN 70W AND 79W...
INCLUDING GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS TO
9 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST FROM 11N TO 14N BETWEEN 70W AND 78W...
INCLUDING GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT...EXCEPT
25 TO 30 KT WITHIN 90 NM OF THE COAST OF COLOMBIA. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 11N TO 14N BETWEEN 70W AND 78W...
INCLUDING GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS
8 TO 10 FT.

.GULF OF MEXICO COLD FRONT FROM 30N86W TO 24N90W TO 21N97W.
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. SCATTERED SHOWERS AND
TSTMS FROM 24N TO 26N E OF FRONT. WINDS AND SEAS COULD BE HIGHER
NEAR TSTMS.
.12 HOUR FORECAST COLD FRONT FROM 29N83W TO 20N97W. WINDS 20 KT
OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.



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