High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 202140
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SUN AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20
24 HOUR FORECAST VALID 1800 UTC AUG 21
48 HOUR FORECAST VALID 1800 UTC AUG 22

.WARNINGS.

...STORM WARNING...
.INLAND LOW 58N65W 998 MB MOVING NE 15 KT. OVER FORECAST WATERS
FROM 40N TO 50N BETWEEN 62W AND 54W AND WITHIN 660 NM E QUADRANT
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW 58N59W 995 MB. WITHIN 360 NM NE QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN 240 NM
NW...840 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 59N55W 989 MB. WITHIN 240 NM NE QUADRANT
WINDS 30 TO 45 KT. SEAS 8 TO 16 FT. ELSEHWERE WITHIN 360 NM NW
QUADRANT AND WITHIN 300 NM E OF A LINE FROM 59N52W TO 55N50W TO
48N50W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST LOW 60N51W 993 MB. WITHIN 120 NM NE QUADRANT
WINDS 40 TO 50 KT. SEAS 14 TO 20 FT. ELSEWHERE WITHIN 240 NM NE
QUADRANT WINDS 30 TO 40 KT. SEAS 10 TO 15 FT. ALSO WITHIN 300 NM
W SEMICIRCLE AND 660 NM SE AND 480 NM SW QUADRANTS WINDS 20 TO
30 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 58N49W 1001 MB. WITHIN 180 NM NE QUADRANT
WINDS 30 TO 40 KT. SEAS 12 TO 17 FT. ELSEWHERE WITHIN 240 W
SEMICIRCLE AND 360 E AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS 8
TO 12 FT.

.SYNOPSIS AND FORECAST.

.LOW E OF AREA 53N29W 1003 MB MOVING E 10 KT. OVER FORECAST
WATERS WITHIN 600 NM SW AND 360 NM NW QUADRANTS WINDS TO 25 KT.
SEAS 8 TO 12 FT.
.24 HOUR FORECAST CONDITIONS E OF AREA.

.LOW 39N56W 1016 MB MOVING NE 10 KT. WITHIN 240 NM NE QUADRANT
WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 43N51W 1013 MB. WITHIN 180 NM E AND NE
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 45N43W 1011 MB. WITHIN 180 NM NE AND 240
NM SE QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM E OF
A LINE FROM 59N54W TO 54N55W TO 50N52W.
.24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM
NE OF A LINE FROM 59N56W TO 50N53W TO 43N54W.
.48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO
49N BETWEEN 42W AND 48W.

.HIGH 44N47W 1026 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 41N40W 1023 MB.
.48 HOUR FORECAST HIGH 43N33W 1022 MB.

.HIGH 31N42W 1023 MB MOVING W 10 KT.
.24 HOUR FORECAST HIGH 31N49W 1022 MB.
.48 HOUR FORECAST HIGH 32N49W 1020 MB.

.HIGH 40N78W 1022 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 37N72W 1022 MB.
.48 HOUR FORECAST HIGH 37N65W 1022 MB.

.HIGH 31N68W 1022 MB MOVING W 5 KT.
.24 HOUR FORECAST HIGH 32N72W 1023 MB.
.48 HOUR FORECAST HIGH 32N72W 1021 MB.

.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 SUN AUG 20.
24 HOUR FORECAST VALID 1800 UTC MON AUG 21.
48 HOUR FORECAST VALID 1800 UTC TUE AUG 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC S OF 26N TO LINE FROM 23N70W TO 21N63W E TO SE WINDS 20 TO
30 KT. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST FROM 24N TO 28.5N BETWEEN 72W AND 75W WINDS 20
KT OR LESS. SEAS TO 8 FT IN E TO SE SWELL.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC FROM 19N TO 23N BETWEEN 46W AND 52W WINDS 20 TO 30 KT.
SEAS 8 TO 11 FT. FROM 23N TO 24.5N BETWEEN 47W AND 51W WINDS 20
KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES NEAR 20.5N55W 1013 MB. WITHIN 210 NM
N SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES NEAR 22.5N57.5W 1014 MB. WINDS 20 KT
OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN LOW PRES...REMNANTS OF HARVEY...NEAR 14N77W 1006
MB. FROM 14N TO 18N BETWEEN 73.5W AND 78W E TO SE WINDS 20 TO 25
KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16.5N83.5W 1007 MB. FROM 16.5N TO 19N BETWEEN 79W AND 84W E TO
SE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW PRES INLAND NEAR 18.5N89W 1010 MB. WINDS
20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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