000
FZNT02 KNHC 121524
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU OCT 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU OCT 12.
24 HOUR FORECAST VALID 1200 UTC FRI OCT 13.
48 HOUR FORECAST VALID 1200 UTC SAT OCT 14.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE OPHELIA NEAR 30.5N 35.6W 978 MB AT 1500 UTC OCT 12 
MOVING NNE OR 020 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 80 KT 
GUSTS 100 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER. 
SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER EXCEPT 90 NM NW 
QUADRANT WITH SEAS TO 24 FT. ELSEWHERE OVER FORECAST WATERS 
WITHIN 210 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
REMAINDER OF AREA N OF 26N AND E OF 40W WINDS 20 KT OR LESS. SEAS 
8 TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE OPHELIA NEAR 31.6N 33.4W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...100 NM SE QUADRANT...70 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM OF CENTER WITH SEAS TO 27 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 210 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 
FT. REMAINDER OF AREA N OF 27N AND E OF 39W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE OPHELIA NE OF AREA NEAR 34.4N 27.3W. 
MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. OVER FORECAST WATERS 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST HURRICANE OPHELIA NEAR 40.9N 18.8W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL OPHELIA NEAR 51.0N 
12.5W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL OPHELIA NEAR 
60.5N 5.5W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 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 29N71W TO 26N76W TO LOW PRES 1009 MB NEAR 
23N79W. FROM 27N TO 29N BETWEEN 75W AND 79W NE TO E WINDS 20 TO 
25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST TROUGH FROM 28N75W TO LOW PRES 1010 MB 
NEAR 22.5N80.5W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN 36 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 76W 
NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT. 

.GULF OF MEXICO STATIONARY FRONT FROM 30N86W TO 27N96W TO 
19N94W. S OF 21N W OF FRONT NW TO N WINDS 20 TO 25 KT. SEAS TO 9 
FT. 
.12 HOUR FORECAST DISSIPATING STATIONARY FRONT FROM 287N97W TO 
22N97W TO 19N94W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.