High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 270940
HSFAT1

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...STORM WARNING...
.RAPIDLY INTENSIFYING LOW 46N48W 1001 MB MOVING NE 25 KT. WITHIN
300 NM SE OF A FRONT EXTENDING FROM 49N38W TO THE LOW CENTER TO
41N55W TO 40N60W WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. ELSEWHERE
WITHIN 540 NM W QUADRANT WINDS 20 TO 30 KT. SEAS TO 10 FT.
.18 HOUR FORECAST LOW 53N40W 980 MB. OVER FORECAST WATERS WITHIN
240 NM NW SEMICIRCLE WINDS 40 TO 55 KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 54N40W 975 MB. WITHIN 240 NM W SEMICIRCLE
AND BETWEEN 120 NM AND 360 NM NE QUADRANT WINDS 40 TO 55 KT.
SEAS 12 TO 25 FT. ELSEWHERE FROM 45N TO 60N E OF 49W WINDS 25 TO
40 KT. SEAS 9 TO 18 FT...HIGHEST S SEMICIRCLE.
.48 HOUR FORECAST LOW 59N36W 987 MB. WITHIN 90 NM W AND NW OF A
FRONT TO EXTEND FROM 59N40W TO 63N39W TO 65N35W AREA OF N TO NE
WINDS 40 TO 50 KT. SEAS 12 TO 21 FT. ELSEWHERE N OF 51N E OF 44W
WINDS 25 TO 40 KT. SEAS 11 TO 19 FT. OTHERWISE FROM 41N TO 51N E
OF 50W WINDS TO 25 KT. SEAS 9 TO 18 FT IN NW TO N SWELL.

...GALE WARNING...
.24 HOUR FORECAST LOW 40N69W 1014 MB. FROM 39N TO 42N BETWEEN
62W AND 69W AREA OF E TO SE WINDS 20 TO 30 KT. SEAS TO 8 FT.
.42 HOUR FORECAST LOW 40N58W 1010 MB. WITHIN 240 NE QUADRANT AND
300 NM S SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 40N55W 1006 MB. WITHIN 300 NM E SEMICIRCLE
AND 420 NM SW QUADRANT WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.

.SYNOPSIS AND FORECAST.

.LOW 62N41W 1006 MB MOVING NE 05 KT. OVER FORECAST WATERS WITHIN
180 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
ELSEWHERE N OF 59N E OF 43W WINDS TO 25 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 51N45W 1005 MB MOVING NE 10 KT. FROM 49N TO 54N BETWEEN 36W
AND 52W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED ABOVE
WITH LOW 54N40W.

.12 HOUR FORECAST OVER FORECAST WATERS FROM 31N TO 32N W OF 76W
AREA OF SE WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 31N TO 34N W OF 76W AREA OF S WINDS 20 TO
30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 31N TO 35N W OF 75W AREA OF S TO SW WINDS
TO 25 KT. SEAS TO 8 FT.

.48 HOUR FORECAST LOW 59N60W 990 MB. OVER ICE FREE FORECAST
WATERS WITHIN 300 NM NE AND 420 NM SE QUADRANTS WINDS 20 TO 30
KT. SEAS TO 10 FT.

.48 HOUR FORECAST NEW LOW 49N65W 1001 MB. OVER FORECAST WATERS
WITHIN 480 NM E AND 300 NM SE QUADRANTS...INCLUDING THE GULF OF
SAINT LAWRENCE WINDS 20 TO 30 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM NW OF
A LINE FROM 46N43W TO 42N49W...AND WITHIN 90 NM OF 40N68W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM OF 40N68W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 44N BETWEEN 64W AND 70W
AND WITHIN 60 NM OF 49N63W.

.HIGH 32N59W 1022 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH S OF AREA.

.24 HOUR FORECAST HIGH 44N55W 1029 MB.
.48 HOUR FORECAST HIGH 43N42W 1027 MB.

.FORECASTER HUFFMAN. 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 SUN MAY 27.
24 HOUR FORECAST VALID 0600 UTC MON MAY 28.
48 HOUR FORECAST VALID 0600 UTC TUE MAY 29.

.WARNINGS.

...GULF OF MEXICO TROPICAL STORM WARNING...
.SUBTROPICAL STORM ALBERTO NEAR 25.0N 84.2W 1001 MB AT 0900 UTC
MAY 27 MOVING NNE OR 015 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 35
KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE...130 NM NE QUADRANT AND 100 NM SE QUADRANT. SEAS 12
FT OR GREATER WITHIN 0 NM OF CENTER EXCEPT 60 NM NE QUADRANT WITH
SEAS TO 12 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 210 NM NE
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. WITHIN 180 NM W
QUADRANT AND 90 NM S QUADRANT WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ALBERTO NEAR 28.6N 85.2W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 100 NM E SEMICIRCLE...50 NM SW QUADRANT AND 70 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER EXCEPT 75
NM SW QUADRANT WITH SEAS TO 18 FT. ELSEWHERE OVER FORECAST WATERS
WITHIN 150 NM OF CENTER EXCEPT 120 NM SW QUADRANT WINDS 20 TO 33
KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM ALBERTO INLAND NEAR 31.7N
86.3W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM
FORCE WINDS WITHIN 0 NM OF CENTER EXCEPT 120 NM SE QUADRANT. SEAS
12 FT OR GREATER OVER FORECAST WATERS WITHIN 180 NM S QUADRANT
WITH SEAS TO 19 FT. ELSEWHERE N OF 27N BETWEEN 84W AND 88W WINDS
20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL DEPRESSION ALBERTO INLAND NEAR 36.2N
86.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW ALBERTO NEAR 41.1N
85.1W. MAXIMUM SUSTAINED WINDS 15 KT GUSTS 20 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW ALBERTO NEAR 45.0N
80.5W. MAXIMUM SUSTAINED WINDS 15 KT GUSTS 20 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 S OF 28N W OF 79W SE TO S WINDS 20 TO 25 KT...EXCEPT 25 TO
30 KT NEAR STRAITS OF FLORIDA. SEAS TO 8 FT NEAR STRAITS OF
FLORIDA.
.24 HOUR FORECAST N OF 25N W OF 77W SE TO S WINDS 20 TO 30 KT.
SEAS 8 TO 11 FT N OF 27N.
.48 HOUR FORECAST N OF 29N W OF 79W WINDS 20 KT OR LESS. SEAS TO
8 FT IN MIXED NE AND SE SWELL.

.CARIBBEAN WITHIN AREA BOUNDED BY 18N75W TO 13.5N68.5W TO
11N71.5W TO 14N76W TO 18N85W WINDS 20 KT OR LESS. SEAS TO 8 FT
IN E SWELL.
.24 HOUR FORECAST FROM 11N TO 14N BETWEEN 65W AND 73W...
INCLUDING THE GULF OF VENEZUELA...E WINDS 20 TO 25 KT. SEAS TO 8
FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.



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