High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 232145
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED AUG 23 2017

CCODE/1:31:04:01:00/AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

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

SYNOPSIS VALID 1800 UTC AUG 23
24 HOUR FORECAST VALID 1800 UTC AUG 24
48 HOUR FORECAST VALID 1800 UTC AUG 25

.WARNINGS.

...GALE WARNING...
.LOW 57N40W 1008 MB MOVING E 05 KT WILL TURN N. OVER FORECAST
WATERS WITHIN 300 NM NW QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 12
FT.
.24 HOUR FORECAST NEW LOW 62N37W 1008 MB. WITHIN 60 NM NW OF A
LINE FROM 63N35W TO 59N42W TO 58N46W WINDS TO 25 KT. SEAS TO 8
FT.
.48 HOUR FORECAST LOW 63N37W 1002 MB. WITHIN 60 NM NW OF A LINE
FROM 65N35W TO 64N38W TO 61N38W WINDS 20 TO 30 KT. SEAS TO 10
FT.
.SYNOPSIS AND FORECAST.

.INLAND LOW 53N73W 990 MB MOVING NE 10 KT. OVER FORECAST WATERS
WITHIN 720 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST NEW LOW 55N57W 1000 MB. WITHIN 300 NM N...480
NM E...660 NM S QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 59N48W 1000 MB. WITHIN 180 NM N SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 8 FT.

.OVER ICE FREE FORECAST WATERS N OF 65N BETWEEN 53W AND 58W AREA
OF S WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.48 HOUR FORECAST OVER ICE FREE WATERS N OF 63N TO 67N BETWEEN
61W AND 54W N WINDS TO 25 KT. SEAS LESS THAN 8 FT.

.LOW 46N35W 1011 MB MOVING E 20 KT. OVER FORECAST WATERS WITHIN
240 NM SW QUADRANT WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

.24 HOUR FORECAST NEW LOW 38N70W 1010 MB. WITHIN 180 NM SE OF A
LINE FROM 43N64W TO 36N72W S TO SW WINDS TO 25 KT. SEAS LESS
THAN 8 FT.
.48 HOUR FORECAST LOW 42N63W 1010 MB. WITHIN 180 NM SE OF A
FRONT TO EXTEND 44N61W TO 37N68W WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 52N W
OF 50W AND FROM 58N TO 63N BETWEEN 35W AND 40W.
.24 HOUR FORECAST DENSE FOG OVER FORECAST WATERS FROM 42N TO 54N
BETWEEN 48W AND 58W AND FROM 59N TO 64N E OF 38W.
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM
59N40W TO 53N44W TO 45N59W.

.HIGH 41N47W 1022 MB MOVING E 05 KT.
.24 HOUR FORECAST HIGH 41N44W 1025 MB.
.48 HOUR FORECAST HIGH 41N40W 1028 MB.

.HIGH 34N48W 1021 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 35N49W 1023 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 35N64W 1017 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 33N62W 1017 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 62N53W 1017 MB MOVING N 15 KT.
.24 HOUR FORECAST HIGH 64N54W 1012 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.FORECASTER SIENKIEWICZ. 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 1800 UTC WED AUG 23.
24 HOUR FORECAST VALID 1800 UTC THU AUG 24.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 25.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL DEPRESSION HARVEY NEAR 21.6N 92.6W 1005 MB AT 2100 UTC
AUG 23 MOVING NW OR 320 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT NEAR CENTER. WITHIN 180 NM NE SEMICIRCLE E TO SE
WINDS 20 TO 30 KT. SEAS TO 11 FT. SCATTERED TSTMS WITHIN 75 NM
OF LOW AND ELSEWHERE WITHIN 360 NM NE QUADRANT.
.24 HOUR FORECAST TROPICAL STORM HARVEY NEAR 23.8N 93.9W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NW AND SE QUADRANTS...70 NM NE AND 30 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM OF CENTER EXCEPT
45 NM S QUADRANT WITH SEAS TO 19 FT. ELSEWHERE WITHIN 240 NM N
AND 120 NM S SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS TO
11 FT. SCATTERED TSTMS GULF OF MEXICO N OF 22N W OF 90W.
.48 HOUR FORECAST TROPICAL STORM HARVEY NEAR 26.4N 96.3W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 120 NM NE...90 NM SE...50 NM SW AND 80 NM NW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 210 NM E AND 60 NM W
SEMICIRCLES WITH SEAS TO 22 FT. ELSEWHERE N OF 24N W OF
92W WINDS 20 TO 33 KT. SEAS TO 11 FT. SCATTERED TSTMS N OF 24N
W OF 89W.
.72 HOUR FORECAST TROPICAL STORM HARVEY INLAND NEAR 28.6N 97.3W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HARVEY INLAND NEAR 29.0N 97.3W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST TROPICAL STORM HARVEY INLAND NEAR 29.0N
96.5W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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.

.CARIBBEAN 24 HOUR FORECAST S OF 13.5N BETWEEN 70W AND 72W E
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN 48 HOUR FORECAST S OF 18N W OF 86W...INCLUDING THE
GULF OF HONDURAS... E TO SE WINDS 20 TO 25 KT. SEAS LESS THAN
8 FT.

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

$$

.FORECASTER NELSON. NATIONAL HURRICANE CENTER.



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