000
FZNT02 KNHC 101543
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC TUE OCT 10 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC TUE OCT 10.
24 HOUR FORECAST VALID 1200 UTC WED OCT 11.
48 HOUR FORECAST VALID 1200 UTC THU OCT 12.

.WARNINGS.

...ATLC HURRICANE WARNING...
.TROPICAL STORM OPHELIA NEAR 31.5N 38.3W 1002 MB AT 1500 UTC OCT 
10 MOVING SE OR 130 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM OF CENTER 
EXCEPT 60 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM OF 
CENTER...EXCEPT 90 NM SE QUADRANT WITH SEAS TO 16 FT. OVER 
FORECAST WATERS WITHIN 120 NM S SEMICIRCLE OF CENTER WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM OPHELIA NEAR 30.2N 37.4W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM S SEMICIRCLE...50 NM NE QUADRANT AND 45 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM N AND 75 NM S 
SEMICIRCLES OF CENTER WITH SEAS TO 20 FT. OVER FORECAST WATERS N 
OF 26N E OF 42W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST HURRICANE OPHELIA NEAR 30.0N 36.2W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM OF CENTER. SEAS 12 FT OR GREATER WITHIN 90 NM OF 
CENTER WITH SEAS TO 24 FT. OVER FORECAST WATERS N OF 25N E OF 
42W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST HURRICANE OPHELIA NEAR 31.2N 33.8W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE OPHELIA NEAR 33.4N 28.5W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL OPHELIA NEAR 
36.0N 21.5W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 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 TROUGH FROM 25N64W TO 19N67W. FROM 22N TO 24N E OF TROUGH 
TO 58W E WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. FROM 22N TO 29N 
BETWEEN 54W AND 70W E WINDS 20 TO 25 KT. SEAS 8 TO 11 FT IN E 
SWELL. 
.24 HOUR FORECAST TROUGH FROM 26N65W TO 20N70W. FROM FROM 25N TO 
30N BETWEEN 63W AND 74W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 
FT. ELSEWHERE FROM 23N TO 30N BETWEEN 60W AND 76W AND E OF THE 
BAHAMAS WINDS 20 KT OR LESS. SEAS TO 9 FT IN E SWELL.  
.48 HOUR FORECAST WEAKENING TROUGH FROM 27N75W TO 22N78W. FROM 
26N TO 28N BETWEEN 73W AND 77W AND E OF HE BAHAMAS WINDS 20 KT 
OR LESS. SEAS 8 FT IN E SWELL. 

.ATLC TROUGH FROM 24N52W TO 22N58W. FROM 20N TO 23N E OF TROUGH 
TO 50W SE WINDS 20 TO 25 KT. SEAS 8 FT. 
.24 HOUR FORECAST TROUGH FROM 25N55W TO 21N58W. WINDS 20 KT OR 
LESS. SEAS LESS THAN 8 FT.

.ATLC TROPICAL WAVE ALONG 36W S OF 15N. E OF WAVE TO 35W E TO SE 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST TROPICAL WAVE ALONG 42W S OF 13N. FROM 10N TO 
13N BETWEEN 38W AND 45W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 12 
FT. 
.48 HOUR FORECAST TROPICAL WAVE ALONG 47W S OF 15N. FROM 11N TO 
15N E OF WAVE AXIS TO 44W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 
11 FT. FROM 12N TO 15N W OF WAVE AXIS TO 51W NE WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 10N TO 16N BETWEEN 44W AND 
51W WINDS 20 KT OR LESS. SEAS TO 9 FT IN E SWELL.

.GULF OF MEXICO 06 HOUR FORECAST COLD FRONT FROM 30N94W TO 
26N97W. NW OF FRONT N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST COLD FRONT FROM 30N90W TO 24N96W TO 19N95W. S 
OF 26N W OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS BUILDING TO 8 
FT.
.48 HOUR FORECAST COLD FRONT FROM 30N85W TO 25N96W THEN 
STATIONARY TO 19N95W. S OF 22N W OF FRONT NW TO N WINDS 20 TO 25 
KT. SEAS 8 FT.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.