000
FZNT02 KNHC 010241
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC FRI SEP 01.
24 HOUR FORECAST VALID 0000 UTC SAT SEP 02.
48 HOUR FORECAST VALID 0000 UTC SUN SEP 03.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE IRMA NEAR 17.8N 35.6W 967 MB AT 0300 UTC SEP 01 
MOVING WNW OR 295 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 120 NM N SEMICIRCLE...90 NM SE QUADRANT AND 60 
NM SW QUADRANT WITH SEAS TO 29 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 240 NM N AND 120 NM S SEMICIRCLES WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 18.3N 39.2W. 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 37 FT. ELSEWHERE 
OVER FORECAST WATERS WITHIN 330 NM N AND 120 NM S SEMICIRCLES 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER AREA FROM 13N TO 
25N E OF 45W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE IRMA NEAR 17.7N 43.8W. 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 420 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 39 
FT. ELSEWHERE WITHIN 360 NM N AND 120 NM S SEMICIRCLES WINDS 20 
TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 13N TO 26N E 
OF 52W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 16.7N 48.2W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 16.3N 52.4W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 17.0N 57.0W. 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 29N BETWEEN 55W AND 67W WINDS 20 KT OR LESS. SEAS TO 
9 FT IN NE SWELL.
.24 HOUR FORECAST N OF 27N BETWEEN 44W AND 62W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN NE SWELL.
.48 HOUR FORECAST N OF 26N E OF 52W WINDS 20 KT OR LESS. SEAS 8 
TO 11 FT IN MIXED SWELL. 

.CARIBBEAN 06 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 76W 
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 11N TO 14N BETWEEN 72W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.