000
FZNT02 KNHC 010929
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 UTC FRI SEP 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FRI SEP 01.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 02.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 03.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE IRMA NEAR 18.2N 36.5W 967 MB AT 0900 UTC SEP 01 
MOVING WNW OR 300 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 100 KT 
GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NW AND SE 
QUADRANTS...80 NM NE QUADRANT AND 40 NM SW QUADRANT.  SEAS 12 FT 
OR GREATER WITHIN 150 NM NE QUADRANT...90 NM SE QUADRANT...75 NM 
SW QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 29 FT. 
ELSEWHERE OVER FORECAST WATERS WITHIN 240 NM NE AND 120 NM SW 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF 
AREA WITHIN 180 NM SW SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 9 
FT IN NE SWELL. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 18.4N 40.5W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
270 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 36 FT. ELSEWHERE 
OVER FORECAST WATERS WITHIN 300 NM N AND 120 NM S SEMICIRCLES 
WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER AREA FROM 15N TO 
27N E OF 46W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE IRMA NEAR 17.6N 45.2W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM N SEMICIRCLE AND 70 NM S SEMICIRCLE. SEAS 12 FT OR 
GREATER WITHIN 300 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 39 
FT. ELSEWHERE WITHIN 360 NM N AND 150 NM S SEMICIRCLES WINDS 20 
TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA FROM 13N TO 24N E 
OF 55W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 16.5N 49.3W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 16.5N 53.5W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 17.5N 58.0W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 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 N OF 28N BETWEEN 52W AND 68W WINDS 20 KT OR LESS. SEAS TO 
10 FT IN N TO NE SWELL.
.24 HOUR FORECAST N OF 23.5N BETWEEN 40W AND 61W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN NW TO N SWELL....HIGHEST N OF 29N E OF 
52W.
.48 HOUR FORECAST N OF LINE FROM 24N35W TO 24N53W TO 31N45W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 

.CARIBBEAN FROM 11N TO 13N BETWEEN 73W AND 76W NE TO E WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 11N TO 14.5N BETWEEN 70W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST FROM 11N TO 13N BETWEEN 72W AND 76W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.