000
FZNT02 KNHC 272216
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI OCT 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 1800 UTC FRI OCT 27.
24 HOUR FORECAST VALID 1800 UTC SAT OCT 28.
48 HOUR FORECAST VALID 1800 UTC SUN OCT 29.

.WARNINGS.
...CARIBBEAN GALE WARNING AND ATLC TROPICAL STORM WARNING...
.LOW PRES NEAR 17.5N 84.5W 1006 MB AT 2100 UTC OCT 27 MOVING NNW 
OR 330 DEG AT 5 KT. WITHIN 0 NM N SEMICIRCLE...60 NM SE QUADRANT 
AND 70 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS TO 10 FT. ELSWHERE 
WITHIN 300 NM OF LOW WINDS 20 TO 25 KT. SEAS TO 8 FT N OF 18N. 
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS BETWEEN 76W AND 
86W. 
.24 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 21.7N 82.4W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 0 NM W SEMICIRCLE...40 NM NE QUADRANT AND 50 NM SE 
QUADRANT. SEAS TO 12 FT WITHIN 120 NM SE QUADRANT. ELSEWHERE 
WITHIN 240 NM SE SEMICIRCLE AND 180 NM SW QUADRANT WINDS 20 TO 
33 KT. SEAS TO 11 FT.
.48 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 28.0N 75.5W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE 
WINDS WITHIN 90 NM NE QUADRANT...120 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 30 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
90 NM E AND 30 NM W SEMICIRCLES WITH SEAS TO 15 FT. ELSEWHERE 
WITHIN 150 NM SE AND 90 NM NW SEMICIRCLES WINDS 20 TO 33 KT. 
SEAS TO 10 FT.
.72 HOUR FORECAST...ABSORBED.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE 
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE 
AND INTENSITY.

...GULF OF MEXICO GALE WARNING...
.COLD FRONT FROM 30N93.5W TO 26.5N97.5W. W OF FRONT NW TO N 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST COLD FRONT FROM 30N89W TO 26N94W TO 23N96W TO 
21N97W. S OF 26N W OF FRONT NW TO N WINDS 25 TO 35 KT. SEAS TO 8 
FT. N OF 26N W OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 9 
FT S OF 28N W OF 95W.
.24 HOUR FORECAST COLD FRONT FROM 30N87W TO 26N92W TO 22N95.5W 
TO 20.5N96W TO 18.5N95W. S OF 24N W OF FRONT NW TO N WINDS 25 TO 
35 KT. SEAS 8 TO 12 FT N OF 22N. N OF 24N W OF FRONT AND W OF 
90W NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 10 FT S OF 28N W OF 92W.
.36 HOUR FORECAST COLD FRONT FROM 30N83W TO 27.5N84W TO 21N92.5W 
TO 18N93.5W. S OF 20N W OF FRONT NW WINDS 20 TO 30 KT. SEAS 10 
TO 13 FT. ELSEWHERE W OF FRONT TO 94W NW TO N WINDS 20 TO 25 KT. 
SEAS TO 11 FT. 
.48 HOUR FORECAST COLD FRONT 26.5N80.5W TO 20N90W. N OF 22.5N E 
OF 88W NW TO N WINDS 20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE S OF 
21N W OF 88W WINDS 20 KT OR LESS. SEAS TO 8 FT IN N SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 30N35W TO 28N40W TO 27N43W. WITHIN AREA 
BOUNDED BY 21N35W TO 19N44W TO 21N49W TO 25N42W TO 31N47W TO 
31N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED N
AND SE SWELL.
.24 HOUR FORECAST DISSIPATING COLD FRONT FROM 28N35W TO 26N43W. 
WITHIN AREA BOUNDED BY 28N35W TO 27N43W TO 31N49W TO 31N35W TO 
28N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED N AND SE
SWELL.
.36 HOUR FORECAST FRONT DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.ATLC 36 HOUR FORECAST COLD FRONT FROM 31N51W TO 27N54W TO 
24N58W. WITHIN AREA BOUNDED BY 28N47W TO 26N49W TO 29N58W TO 
31N59W TO 30N51W TO 31N47W TO 28N47W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED NE AND SE SWELL.
.48 HOUR FORECAST COLD FRONT FROM 31N49W TO 29N51W TO 23N58W. 
LITTLE CHANGE.

.ATLC WITHIN AREA BOUNDED BY 11N37W TO 10N43W TO 10N46W TO
11N46W TO 13N42W TO 12N38W TO 11N37W WINDS 20 KT OR LESS. SEAS
TO 8 FT IN MIXED N AND SE SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 09N35W TO 09N37W TO 
12N45W TO 11N50W TO 15N47W TO 14N41W TO 09N35W WINDS 20 KT OR 
LESS. SEAS 8 FT IN MIXED N AND SE SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 07N35W TO 07N42W TO 
08N45W TO 14N46W TO 12N37W TO 10N35W TO 07N35W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN MIXED NE AND SE SWELL.

.ATLC 36 HOUR FORECAST COLD FRONT JUST W OF AREA. TROUGH FROM 
31N80.5W TO 29N81W TO 25N81.5W. WITHIN 120 NM E OF TROUGH... 
INCLUDING THE STRAITS OF FLORIDA...S TO SW WINDS 20 TO 25 KT. 
SEAS TO 8 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N79W TO 27N80W. TROUGH FROM 
27N80W TO 23N81W. WITHIN 150 NM E OF FRONT AND TROUGH S TO SW 
WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.