000
FZNT02 KNHC 031005
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN SEP 03.
24 HOUR FORECAST VALID 0600 UTC MON SEP 04.
48 HOUR FORECAST VALID 0600 UTC TUE SEP 05.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE IRMA NEAR 18.0N 47.5W 969 MB AT 0900 UTC SEP 03 
MOVING WSW OR 255 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 100 KT 
GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM E 
SEMICIRCLE...40 NM SW QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 400 NM NE QUADRANT...120 NM SE QUADRANT...100 
NM SW QUADRANT...AND 360 NM NW QUADRANT WITH SEAS TO 36 FT. 
ELSEWHERE WITHIN 360 NM N SEMICIRCLE...120 NM SE AND 75 NM SW 
QUADRANTS WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA 
E OF 55W TO LINE FROM 15N45W TO 24N35W WINDS 20 KT OR LESS. SEAS 
8 TO 10 FT IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 16.8N 51.3W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM N SEMICIRCLE...80 NM SE QUADRANT AND 60 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM N AND 120 NM S 
SEMICIRCLES WITH SEAS TO 40 FT. ELSEWHERE WITHIN 300 NM N AND 
150 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
REMAINDER AREA FROM 11N TO 29N BETWEEN 44W AND 60W WINDS 20 KT 
OR LESS. SEAS TO 10 FT IN MIXED SWELL. 
.48 HOUR FORECAST HURRICANE IRMA NEAR 16.5N 55.7W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM N SEMICIRCLE...100 NM SE QUADRANT AND 80 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM N AND 150 NM S 
SEMICIRCLES WITH SEAS TO 42 FT. ELSEWHERE WITHIN 360 NM N AND 
210 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
REMAINDER OF AREA FROM 09N TO 27N BETWEEN 47W AND 63W... 
INCLUDING CARIBBEAN PASSAGES...WINDS 20 KT OR LESS. SEAS TO 11 
FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE IRMA NEAR 17.8N 60.6W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 20.0N 66.0W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 22.5N 71.5W. 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.

.ATLC AND CARIBBEAN FROM 17.5N TO 21N BETWEEN 60W AND 64.5W 
WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED N AND E SWELL.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN S OF 17.5N W OF 86W...INCLUDING THE GULF OF 
HONDURAS...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. SCATTERED 
TSTMS.
.06 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 STRIPLING. NATIONAL HURRICANE CENTER.