High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 210341
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT OCT 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE
PROBLEM IS TAKING PLACE.

PAN PAN

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

SYNOPSIS VALID 0000 UTC OCT 21
24 HOUR FORECAST VALID 0000 UTC OCT 22
48 HOUR FORECAST VALID 0000 UTC OCT 23

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 40N50W 996 MB MOVING NE 40 KT AND RAPIDLY INTENSIFYING.
WITHIN 300 NM E AND 360 NM S QUADRANTS WINDS 35 TO 50 KT. SEAS
12 TO 19 FT. ELSEWHERE WITHIN 420 NM SE AND 240 NM NW
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.12 HOUR FORECAST LOW 46N40W 970 MB. WITHIN 240 NM E AND SE
QUADRANTS WINDS 50 TO 65 KT. SEAS 16 TO 28 FT.
.24 HOUR FORECAST LOW 53N35W 950 MB. OVER FORECAST WATERS WITHIN
240 NM E AND SE SEMICIRCLES WINDS 60 TO 75 KT. SEAS 21 TO 39 FT.
ELSEWHERE FROM 48N TO 56N E OF 38W WINDS 45 TO 60 KT. SEAS 16 TO
24 FT. ALSO FROM 43N TO 58N E OF 40W WINDS 30 TO 45 KT. SEAS 10
TO 18 FT.
.48 HOUR FORECAST LOW E OF AREA 56N34W 956 MB. WITHIN 420 NM NW
AND 720 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 16 TO 28 FT.
ELSEWHERE N OF 41N AND E OF 58W WINDS 25 TO 40 KT. SEAS 12 TO 21
FT.

...STORM WARNING...
.LOW 56N54W 982 MB MOVING SE 15 KT. WITHIN 660 NM SE
QUADRANT...600 NM SW QUADRANT...AND 660 NM N AND NW QUADRANTS
WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.
.12 HOUR FORECAST LOW 54N51W 985 MB. WITHIN 300 NM SW AND 720 NM
NW QUADRANTS WINDS 35 TO 50 KT. SEAS 16 TO 22 FT.
.24 HOUR FORECAST LOW 54N44W 980 MB. WITHIN 300 NM SW OF A LINE
FROM 67N54W TO 56N52W TO 51N47W TO 50N40W...AND WITHIN 120 NM NW
OF A LINE FROM 61N39W TO 57N44W WINDS 35 TO 50 KT. SEAS 16 TO 25
FT. ELSEWHERE N OF 41N BETWEEN 40W AND 62W WINDS 25 TO 35 KT.
SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
56N34W DESCRIBED ABOVE.

...GALE WARNING...
.LOW 65N40W 992 MB MOVING SW 10 KT. OVER FORECAST WATERS N OF
65N E OF 38W WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY W OF A LINE
FROM 61N63W TO 67N58W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 66N W OF
57W.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 48N TO 57N
BETWEEN 51W AND 56W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.24 HOUR FORECAST HIGH 41N67W 1030 MB.
.48 HOUR FORECAST HIGH 42N63W 1034 MB.

.FORECASTER NOLT. 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 0000 UTC SAT OCT 21.
24 HOUR FORECAST VALID 0000 UTC SUN OCT 22.
48 HOUR FORECAST VALID 0000 UTC MON OCT 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N59W TO 26N70W AND DISSIPATING
STATIONARY FRONT TO 24N77W. N OF 29N E OF FRONT TO 58W SW WINDS
20 TO 25 KT. SEAS 8 TO 9 FT.
.12 HOUR FORECAST COLD FRONT FROM 31N57W TO 28N67W THEN
WEAKENING STATIONARY FRONT TO 26N74W. N OF 30N BETWEEN 47W AND
50W SW WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 31N54W TO 27N65W.
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC FROM 27N TO 28N BETWEEN 77W AND 80W AND FROM 24N TO 27N W
OF 79W...INCLUDING STRAITS OF FLORIDA...E WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 23N TO 26N W OF 79W...INCLUDING STRAITS
OF FLORIDA...E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC FROM 10N TO 14N BETWEEN 56W AND 62W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN NE SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC TROPICAL WAVE FROM 19N41W TO 14N43W TO 09N44W. FROM 14N TO
TO 17N E OF WAVE TO 37W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 10
FT. ELSEWHERE FROM 10N TO 19N E OF 44W WINDS 20 KT OR LESS. SEAS
8 TO 9 FT IN MIXED N AND NE SWELL.
.24 HOUR FORECAST WEAKENING TROPICAL WAVE ALONG 51W S OF 22N.
FROM 08N TO 18N E OF WAVE WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
MIXED SWELL.
.48 HOUR FORECAST WEAKENING TROPICAL WAVE ALONG 56W S OF 22N.
FROM 08N TO 16N BETWEEN 42W AND 51W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN MIXED SWELL.

.ATLC S OF 21N BETWEEN 70W AND 72W E WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.12 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST LITTLE CHANGE.
.24 HOUR FORECAST S OF 21N BETWEEN 71W AND 76W...INCLUDING
ENTRANCE TO WINDWARD PASSAGE...E WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.36 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 11N TO 18N BETWEEN 70W AND 76W AND FROM 11.5N TO
15N BETWEEN 65W AND 70W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 11
FT...HIGHEST NEAR 14N72W. ELSEWHERE FROM 11.5N TO 18N BETWEEN
62W AND 79W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E
SWELL.
.24 HOUR FORECAST FROM 11.5N TO 17.5N BETWEEN 69W AND 79W AND
FROM 11.5N TO 16N BETWEEN 65W AND 69W E TO SE WINDS 20 TO 25 KT.
SEAS 8 TO 11 FT. ELSEWHERE FROM 11N TO 18N BETWEEN 64W AND 81W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 12N TO 17.5N BETWEEN 68W AND 77W E WINDS
20 TO 25 KT. SEAS 8 TO 11 FT...HIGHEST NEAR 15N75W. ELSEWHERE
FROM 11N TO 18N BETWEEN 66W AND 82W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN NE TO E SWELL.

.GULF OF MEXICO FROM 23N TO 26N E OF 84W...INCLUDING STRAITS OF
FLORIDA...E WINDS 20 TO 25 KT. SEAS TO 8 FT STRAITS OF FLORIDA.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST FROM 23N TO 25N E OF 84W...INCLUDING STRAITS
OF FLORIDA...E TO SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.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 AGUIRRE. NATIONAL HURRICANE CENTER.


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