000
FZNT02 KNHC 031513
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC SUN SEP 03 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN SEP 03.
24 HOUR FORECAST VALID 1200 UTC MON SEP 04.
48 HOUR FORECAST VALID 1200 UTC TUE SEP 05.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE IRMA NEAR 17.7N 48.4W 969 MB AT 1500 UTC SEP 03 
MOVING WSW OR 255 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 100 KT 
GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N 
SEMICIRCLE...60 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 150 NM S SEMICIRCLE...390 NM NE QUADRANT AND 
360 NM NW QUADRANT WITH SEAS TO 38 FT. ELSEWHERE WITHIN 300 NM N 
AND 180 NM S SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS TO 11 
FT. REMAINDER WATERS BOUNDED BY 31N35W TO 21N35W TO 12N50W TO 
22N56W TO TO 31N35W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY 
IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 16.6N 52.2W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM N SEMICIRCLE...80 NM SE QUADRANT AND 60 NM SW 
QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 240 
NM N AND 180 NM S SEMICIRCLES WITH SEAS TO 40 FT. REMAINDER 
WATERS WITHIN 540 NM N AND 360 NM S SEMICIRCLES WINDS 20 KT OR 
LESS. SEAS TO 11 FT PRIMARILY IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE IRMA NEAR 16.7N 56.6W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM NE QUADRANT...100 NM SE QUADRANT...80 NM SW 
QUADRANT...AND 120 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 
FT OR GREATER WITHIN 270 NM N AND 240 NM S SEMICIRCLES WITH SEAS 
TO 42 FT. REMAINDER WATERS WITHIN 480 NM N AND 360 NM S 
SEMICIRCLES...INCLUDING CARIBBEAN PASSAGES... WINDS 20 KT OR 
LESS. SEAS TO 11 FT PRIMARILY IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 18.2N 61.8W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 20.4N 67.1W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 22.5N 72.0W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 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 42 HOUR FORECAST N OF 13N E OF 63W...INCLUDING ATLC
PASSAGES...WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN MIXED 
N AND E SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.