000
FZNT02 KNHC 182120
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU AUG 18 2016

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU AUG 18.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 19.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 20.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM FIONA NEAR 17.0N 41.3W 1006 MB AT 2100 UTC AUG
18 MOVING NW OR 305 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM N
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
60 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE WITH SEAS TO 15 FT.
ELSEWHERE WITHIN 180 NM NE AND 120 NM SW SEMICIRCLES WINDS 20 TO
33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM FIONA NEAR 18.5N 44.3W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM OF CENTER WITH SEAS
TO 18 FT. ELSEWHERE WITHIN 150 NM OF CENTER WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM FIONA NEAR 20.8N 48.0W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE
WITHIN 150 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL STORM FIONA NEAR 23.0N 51.7W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM FIONA NEAR 25.0N 55.0W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST TROPICAL STORM FIONA NEAR 27.2N 56.6W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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.

.CARIBBEAN FROM 11N TO 14N BETWEEN 71W AND 77W...INCLUDING WITHIN
90 NM OF COAST OF COLOMBIA...NE TO E WINDS 20 TO 30 KT. SEAS 8
TO 10 FT. FROM 10.5N TO 15N BETWEEN 77W AND 81W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. 
.24 HOUR FORECAST FROM 11N TO 14N BETWEEN 71W AND
79W...INCLUDING WITHIN 90 NM OF COAST OF COLOMBIA...NE TO E
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 10.5N TO 16N
BETWEEN 73W AND 81W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO
E SWELL. 
.48 HOUR FORECAST FROM 11N TO 14N BETWEEN 72W AND
79W...INCLUDING WITHIN 90 NM OF COAST OF COLOMBIA...E WINDS 20
TO 25 KT. SEAS TO 9 FT.

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

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.