000
FZNT02 KNHC 302118
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC WED AUG 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC WED AUG 30.
24 HOUR FORECAST VALID 1800 UTC THU AUG 31.
48 HOUR FORECAST VALID 1800 UTC FRI SEP 01.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRMA NEAR 16.4N 31.2W 1001 MB AT 2100 UTC AUG 30 
MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 50 KT 
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER 
EXCEPT SW QUADRANT.  SEAS 12 FT OR GREATER WITHIN 45 NM N 
SEMICIRCLE WITH SEAS TO 14 FT.  OVER FORECAST WATERS WINDS 20 KT 
OR LESS. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 17.3N 34.5W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM N SEMICIRCLE...40 NM SE QUADRANT AND 30 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 60 NM S 
SEMICIRCLES WITH SEAS TO 24 FT. ELSEWHERE OVER FORECAST WATERS 
WITHIN 240 NM N AND 90 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. 
.48 HOUR FORECAST HURRICANE IRMA NEAR 18.2N 38.2W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NE QUADRANT...50 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM N AND 90 NM S SEMICIRCLES WITH SEAS TO 32 FT. ELSEWHERE 
WITHIN 270 NM N AND 150 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 18.2N 43.0W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 17.3N 47.8W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 16.5N 52.5W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM HARVEY NEAR 30.8 93.1W 998 MB AT 2100 UTC AUG 30 
MOVING NNE OR 025 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 40 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM SE QUADRANT WITH 
SEAS TO 13 FT. ELSEWHERE OVER FORECAST WATERS N OF 26N W OF 87W 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 33.5N 
91.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.   
.48 HOUR FORECAST POST TROPICAL REMNANT LOW HARVEY INLAND NEAR 
36.4N 87.1W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. 
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW HARVEY NEAR 38.6N 
83.0W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

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 24 HOUR FORECAST N OF 30N BETWEEN 58W AND 63W WINDS 20 KT 
OR LESS. SEAS 8 FT IN NE SWELL.
.48 HOUR FORECAST N OF 29N BETWEEN 48W AND 60W WINDS 20 KT OR 
LESS. SEAS 9 TO 10 FT IN NE SWELL. 

.CARIBBEAN 12 HOUR FORECAST S OF 14N BETWEEN 70W AND 74W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 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 COBB. NATIONAL HURRICANE CENTER.