High Seas Forecast
Issued by NWS

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743
FZNT01 KWBC 251705
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC FRI MAY 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAY 25.
24 HOUR FORECAST VALID 1200 UTC MAY 26.
48 HOUR FORECAST VALID 1200 UTC MAY 27.

.WARNINGS.

...STORM WARNING...
.LOW 57N43W 977 MB MOVING NE 20 KT. FRONT EXTENDS FROM 57N44W TO
59N40W. WITHIN 180 NM S SEMICIRCLE AND 120 NM NW OF THE FRONT
WINDS 40 TO 55 KT. SEAS 11 TO 21 FT. ELSEWHERE BETWEEN 35W AND A
LINE FROM 62N41W TO 57N49W TO 52N47W WINDS 25 TO 40 KT. SEAS 8
TO 16 FT.
.24 HOUR FORECAST LOW 64N38W 991 MB. OVER FORECAST WATERS N OF
59N E OF 43W WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ELSEWHERE N OF
50N E OF 45W WINDS LESS THAN 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 62N41W 1008 MB. WITHIN 180 NM SE
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW 44N42W 1009 MB MOVING NE 35 KT. FRONT EXTENDS FROM 51N35W
TO THE LOW TO 37N50W. WITHIN 180 NM E OF THE FRONT WINDS 25 TO
35 KT. SEAS 8 TO 15 FT. ALSO WITHIN 300 NM E OF THE FRONT WINDS
TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

...GALE WARNING...
.COMPLEX INLAND LOW WITH MEAN CENTER 51N69W 999 MB MOVING SE 20
KT. OVER FORECAST WATERS WITHIN 600 NM S AND SE QUADRANTS WINDS
20 TO 30 KT. SEAS TO 8 FT.
.06 HOUR FORECAST INLAND LOW 48N65W 998 MB. BETWEEN 180 NM AND
480 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 46N60W 1001 MB
AND NEW CENTER 48N52W 1004 MB. BETWEEN 180 NM AND 480 NM S
QUADRANT OF FIRST LOW...AND BETWEEN 120 NM AND 360 NM SE
QUADRANT OF SECOND LOW WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ALSO
WITHIN 600 NM S AND SE SEMICIRCLES OF FIRST LOW WINDS TO 25 KT.
SEAS TO 10 FT.
.48 HOUR FORECAST COMBINED LOW 50N45W 990 MB. WITHIN 420 NM
NE...600 NM SE...540 NM SW...AND 360 NM NW QUADRANTS WINDS 25 TO
40 KT. SEAS 8 TO 17 FT.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST OVER ICE FREE FORECAST WATERS N OF 64N WITHIN
120 NM W OF THE GREENLAND COAST AREA OF N TO NW WINDS TO 25 KT.
SEAS TO 8 FT.
.36 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 57N TO 60N BETWEEN 35W AND 40W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
WITHIN 120 NM OF 45N50W AND 90 NM OF 42N68W.
.48 HOUR FORECAST DENSE FOG FROM 49N TO 52N BETWEEN 36W AND 43W
AND WITHIN 90 NM OF 40N69W.

.HIGH 32N36W 1027 MB DRIFTING W.
.24 HOUR FORECAST HIGH 32N38W 1026 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 37N62W 1022 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 35N58W 1023 MB.
.48 HOUR FORECAST HIGH 33N57W 1024 MB.

.HIGH 36N74W 1022 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH 42N40W 1023 MB.
.48 HOUR FORECAST HIGH E OF AREA.

.24 HOUR FORECAST NEW HIGH 51N36W 1022 MB.
.48 HOUR FORECAST HIGH E OF AREA.

.FORECASTER REINHART. 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 FRI MAY 25.
24 HOUR FORECAST VALID 1200 UTC SAT MAY 26.
48 HOUR FORECAST VALID 1200 UTC SUN MAY 27.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO TROPICAL STORM WARNING...
.SUBTROPICAL STORM ALBERTO NEAR 19.7N 86.8W 1005 MB AT 1500 UTC
MAY 25 MOVING NNE OR 020 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 35
KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E
SEMICIRCLE AND 0 NM W SEMICIRCLE. ELSEWHERE OVER FORECAST WATERS
WITHIN 210 NM NE SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST SUBTROPICAL STORM ALBERTO NEAR 22.0N 86.2W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER OVER
FORECAST WATERS WITHIN 120 NM E SEMICIRCLE WITH SEAS TO 14 FT.
ELSEWHERE OVER FORECAST WATERS WITHIN 210 NM E SEMICIRCLE WINDS
20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST TROPICAL STORM ALBERTO NEAR 26.7N 86.1W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 100 NM E SEMICIRCLE...0 NM SW QUADRANT AND 80 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM E SEMICIRCLE AND
90 NM NW QUADRANT WITH SEAS TO 15 FT. ELSEWHERE GULF WATERS N OF
23N E OF 86W AND 90 NM W SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO
12 FT.
.72 HOUR FORECAST TROPICAL STORM ALBERTO NEAR 29.3N 87.9W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL DEPRESSION ALBERTO NEAR 29.3N 87.9W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION ALBERTO NEAR 29.3N 87.9W.
MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC 06 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W E TO SE
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST S OF 21N BETWEEN 70W AND 73W E TO SE WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC 42 HOUR FORECAST S OF 29N W OF 78W SE TO S WINDS 20 TO 25
KT. SEAS BUILDING TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN FROM 11N TO 15N BETWEEN 70W AND 76W E WINDS 20 TO 25
KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST FROM 11N TO 18N BETWEEN 70W AND 77W E WINDS 20
TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST FROM 11N TO 15N BETWEEN 69W AND 74W E TO SE
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. CARIBBEAN WATERS N OF LINE
15N74W TO 19N81W SE TO S WINDS 20 TO 25 KT. SEAS TO 9 FT.

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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