High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 231538
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT SEP 23 2017

CCODE/2:31:04:11:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

ATLANTIC ICEBERG ANALYSIS AND OUTLOOK PRODUCTS...COURTESY OF
THE U.S. COAST GUARD INTERNATIONAL ICE PATROL...CAN BE FOUND
ON THE OCEAN PREDICTION CENTER WEB PAGE AT
HTTP://WWW.OPC.NCEP.NOAA.GOV/ATL_TAB.SHTML(LOWERCASE).

PAN PAN

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

SYNOPSIS VALID 1200 UTC SEP 23
24 HOUR FORECAST VALID 1200 UTC SEP 24
48 HOUR FORECAST VALID 1200 UTC SEP 25

.WARNINGS.

.FOR INFORMATION ON HURRICANE MARIA AND TROPICAL STORM LEE SEE
NHC PORTION BELOW.

...STORM WARNING...
.LOW E OF AREA 58N25W 968 MB MOVING N 20 KT AND TURNING NW. OVER
FORECAST WATERS E OF A LINE FROM 43N42W TO 57N39W TO 65N37W
WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW E OF AREA 65N33W 977 MB. OVER FORECAST
WATERS N OF 65N E OF 36W WINDS 35 TO 50 KT. SEAS 16 TO 24 FT.
ELSEWHERE N OF 62N E OF 39W WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DESCRIBED
WITH LOW 61N36W BELOW.

...GALE WARNING...
.POST-TROPICAL CYCLONE JOSE 39N69W 1006 MB DRIFTING E. WITHIN
180 NM W AND 240 NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO
12 FT. .24 HOUR FORECAST LOW 39N67W 1010 MB. WITHIN 180 NM NW
AND SE QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 62N52W 1000 MB MOVING SE 10 KT. FROM 59N TO 67N BETWEEN 53W
AND 61W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 60N46W 990 MB. WITHIN 300 NM SW SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE N OF 56N BETWEEN
41W AND A LINE FROM 67N62W TO 56N56W WINDS 20 TO 30 KT. SEAS TO
11 FT.
.48 HOUR FORECAST LOW 61N47W 984 MB. WITHIN 300 NM SW SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 9 TO 17 FT. ELSEWHERE WITHIN 480 NM NW
AND 540 NM S AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.06 HOUR FORECAST LOW 53N54W 990 MB. WITHIN 360 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 53N38W 982 MB. OVER FORECAST WATERS WITHIN
180 NM NE...540 NM W AND 660 NM S QUADRANTS WINDS 25 TO 40 KT.
SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW 61N36W 979 MB. WITHIN 240 NM N AND 300 NM
S QUADRANTS WINDS 30 TO 45 KT. SEAS 11 TO 18 FT. ELSEWHERE
WITHIN 300 NM N AND 480 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 8
TO 13 FT.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST EXCEPT WHERE NOTED IN NHC PORTION BELOW WITH
HURRICANE MARIA...FROM 31N TO 34N BETWEEN 67W AND 79W WINDS 20
TO 33 KT. SEAS TO 12 FT.
.48 HOUR FORECAST EXCEPT WHERE NOTED IN NHC PORTION BELOW WITH
HURRICANE MARIA...OVER FORECAST WATERS S AND SW OF A LINE FROM
34N65W TO 35N72W TO 33N80W WINDS 20 TO 33 KT. SEAS TO 12 FT.

.DENSE FOG. 12 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 41N TO 45N BETWEEN 50W AND 60W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.DENSE FOG. 48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 42N TO 45N BETWEEN 53W AND 57W.

.HIGH 34N56W 1021 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.HIGH 42N47W 1021 MB MOVING SE 30 KT.
.24 HOUR FORECAST HIGH E OF AREA.

.FORECASTER KOSIER. 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 SAT SEP 23.
24 HOUR FORECAST VALID 1200 UTC SUN SEP 24.
48 HOUR FORECAST VALID 1200 UTC MON SEP 25.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE MARIA NEAR 25.4N 72.3W 952 MB AT 1500 UTC SEP 23
MOVING NNW OR 340 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 100 KT
GUSTS 125 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM E
SEMICIRCLE...100 NM SW QUADRANT AND 150 NM NW QUADRANT. SEAS 12
FT OR GREATER WITHIN 300 NM OF CENTER EXCEPT 150 NM SW QUADRANT
WITH SEAS TO 40 FT. ELSEWHERE WITHIN 360 NM NE AND 150 NM SW
SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER ATLC WATERS E OF BAHAMAS FROM 20N TO 31N BETWEEN 64W
AND 80W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
NUMEROUS STRONG TSTMS WITHIN 120 NM SW AND 60 NM NE SEMICIRCLES
OF CENTER. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE FROM 22N
TO 28N BETWEEN 70W AND 75W.
.24 HOUR FORECAST HURRICANE MARIA NEAR 28.3N 73.0W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 170 NM E SEMICIRCLE...120 NM SW QUADRANT AND 160 NM NW
QUADRANT. SEAS 12 FT OR GREATER N OF 24N BETWEEN 66W AND 80W NE
OF BAHAMAS WITH SEAS TO 40 FT. ELSEWHERE OVER FORECAST WATERS N
OF 24N BETWEEN 66W AND 78W WINDS 20 TO 33 KT. SEAS 9 TO 14 FT.
REMAINDER ATLC WATERS E OF BAHAMAS FROM 20N TO 31N BETWEEN 63W
AND 80.5W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE MARIA NEAR 30.5N 73.4W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 170 NM E SEMICIRCLE...140 NM SW QUADRANT AND 160 NM NW
QUADRANT. SEAS 12 FT OR GREATER N OF 25N BETWEEN 66W AND 80W N
AND NE OF BAHAMAS WITH SEAS TO 36 FT. ELSEWHERE OVER FORECAST
WATERS N OF 25N BETWEEN 66W AND 77W WINDS 20 TO 33 KT. SEAS 9 TO
14 FT. REMAINDER ATLC WATERS E OF BAHAMAS FROM 22N TO 31N W OF
63W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE MARIA NEAR 32.1N 73.4W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIA NEAR 33.5N 73.5W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST HURRICANE MARIA NEAR 34.5N 72.5W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM LEE NEAR 31.9N 49.4W 1007 MB AT 1500 UTC SEP 23
MOVING N OR 360 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS
50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER. SEAS
12 FT OR GREATER WITHIN 30 NM OF CENTER EXCEPT 45 NM NE QUADRANT
WITH SEAS TO 14 FT.
.24 HOUR FORECAST TROPICAL STORM LEE NEAR 32.3N 48.3W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM OF CENTER EXCEPT 40 NM NW QUADRANT. SEAS 12 FT OR
GREATER WITHIN 60 NM OF CENTER...EXCPET 45 NM NW QUADRANT WITH
SEAS TO 16 FT. ELSEWHERE WITHIN 60 NM OF CENTER WINDS 20 TO 33
KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM LEE NEAR 31.3N 46.2W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
.72 HOUR FORECAST HURRICANE LEE NEAR 30.5N 45.3W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE LEE NEAR 29.9N 45.9W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST HURRICANE LEE NEAR 30.5N 47.1W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 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 24 HOUR FORECAST N OF 29N E OF 40W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN NW TO N SWELL.
.36 HOUR FORECAST N OF 28N E OF A LINE FROM 31N45W TO 28N40W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW TO N SWELL.
.48 HOUR FORECAST 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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