High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 190958
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 19
24 HOUR FORECAST VALID 0600 UTC AUG 20
48 HOUR FORECAST VALID 0600 UTC AUG 21

.WARNINGS.

...GALE WARNING...
.POST-TROPICAL CYCLONE GERT 51N40W 1000 MB MOVING NE 15 KT. OVER
FORECAST WATERS WITHIN 300 NM NE...660 NM SW...AND 180 NM NW
QUADRANTS AND 120 NM SE OF A FRONT FROM 43N35W TO 36N48W WINDS
25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE GERT E OF AREA NEAR
55N30W 1000 MB. BETWEEN 360 NM AND 720 NM SW AND WITHIN 300 NM
NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE GERT AND ASSOCIATED
CONDITIONS E OF AREA.

...GALE WARNING...
.OVER FORECAST WATERS N OF 62N BETWEEN 50W AND 53W AREA OF SE TO
S WINDS 25 TO 35 KT. SEAS TO 9 FT.
.24 HOUR FORECAST WITHIN 120 NM SE OF A LINE FROM 62N40W TO
57N57W AREA OF SE TO S WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST CONDITIONS ABSORBED BY LOW 56N59W DESCRIBED
BELOW.

...GALE WARNING...
.INLAND LOW 50N78W 1000 MB MOVING NE 15 KT. OVER FORECAST WATERS
WITHIN 720 NM SE QUADRANT WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST INLAND LOW 55N72W 998 MB. WITHIN 900 NM SE
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 56N59W 995 MB. WITHIN 360 NM N...480 NM
NE...AND 780 NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.DENSE FOG. 48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
WITHIN 120 NM NE OF A LINE FROM 58N60W TO 51N54W.

.24 HOUR FORECAST HIGH 45N52W 1025 MB.
.48 HOUR FORECAST HIGH 42N44W 1025 MB.

.24 HOUR FORECAST NEW HIGH 32N39W 1023 MB.
.48 HOUR FORECAST HIGH 32N52W 1023 MB

.FORECASTER BELL. 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 SAT AUG 19.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 20.
48 HOUR FORECAST VALID 0600 UTC MON AUG 21.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HARVEY NEAR 13.8N 65.9W 1005 MB AT 0900 UTC AUG
19 MOVING W OR 275 DEG AT 18 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
60 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 16 FT.
ELSEWHERE WITHIN AREA BOUNDED BY 18N69W TO 18N63W TO 13N63W TO
13N69W TO 18N69W...INCLUDING IN ATLANTIC EXPOSURES AND PASSAGES
AND IN MONA PASSAGE...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT IN MIXED
SWELL.
.24 HOUR FORECAST TROPICAL STORM HARVEY NEAR 14.3N 72.7W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN AREA BOUNDED BY 18N75W TO 18N69W TO
12N69W TO 12N75W TO 18N75W...INCLUDING WITHIN 90 NM OF COAST OF
COLOMBIA AND GULF OF VENEZUELA AND IN MONA PASSAGE...WINDS 20 TO
33 KT. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM HARVEY NEAR 15.2N 80.1W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 90 NM NE QUADRANT...50 NM SE QUADRANT...40 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90
NM N SEMICIRCLE WITH SEAS TO 19 FT.
.72 HOUR FORECAST TROPICAL STORM HARVEY NEAR 17.0N 86.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HARVEY INLAND NEAR 18.3N 90.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST TROPICAL STORM HARVEY OVER WATER NEAR 19.3N
93.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 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 WITHIN AREA BOUNDED BY 21N66W TO 21N59W TO 18N59W TO
18N66W TO 21N66W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES... WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E SWELL.
WITHIN AREA BOUNDED BY 24N59W TO 24N47W TO 15N47W TO 15N59W TO
24N59W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 25N66W TO 25N56W TO
19N56W TO 19N66W TO 25N66W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
E SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 26N72W TO
26N67W TO 22N67W TO 22N72W TO 26N72W WINDS 20 KT OR LESS. SEAS 8
FT IN E SWELL.

.ATLC WITHIN AREA BOUNDED BY 20N43W TO 20N35W TO 13N35W TO
13N43W TO 20N43W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 22N54W TO 22N41W TO
16N41W TO 16N54W TO 22N54W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 24N57W TO 24N47W TO
19N47W TO 19N57W TO 24N57W E WINDS 20 TO 25 KT. SEAS 8 FT.

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

CONVECTION VALID AT 0900 UTC SAT AUG 19...

.TROPICAL STORM HARVEY...NUMEROUS MODERATE TO SCATTERED STRONG
FROM 12N TO 15N BETWEEN 65W TO 70W.

.SCATTERED MODERATE ATLC FROM 23N TO 26N BETWEEN 75W AND 78W.

.SCATTERED MODERATE ATLC FROM 18N TO 22N BETWEEN 54W AND 58W.

.SCATTERED MODERATE ISOLATED STRONG GULF OF MEXICO N OF 29N
BETWEEN 84W AND 87W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.



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