000
FZNT02 KNHC 301458
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC WED AUG 30.
24 HOUR FORECAST VALID 1200 UTC THU AUG 31.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 01.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRMA NEAR 16.4N 30.3W 1004 MB AT 1500 UTC AUG 30 
MOVING W OR 280 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S 
SEMICIRCLE...20 NM NE QUADRANT AND 30 NM NW QUADRANT.  SEAS 12 
FT OR GREATER WITHIN 0 NM S SEMICIRCLE...20 NM NE QUADRANT AND 
30 NM NW QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN 270 NM N 
AND 30 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST TROPICAL STORM IRMA NEAR 17.3N 33.8W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM N SEMICIRCLE...40 NM SE QUADRANT AND 20 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 60 NM S 
SEMICIRCLES WITH SEAS TO 18 FT. ELSEWHERE WITHIN 240 NM N AND 
120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST HURRICANE IRMA NEAR 18.2N 37.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM N AND 60 NM S SEMICIRCLES WITH SEAS TO 22 FT. ELSEWHERE 
WITHIN 240 NM N AND 120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 18.7N 41.9W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 17.7N 46.5W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 17.0N 51.0W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE 
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE 
AND INTENSITY.

...TROPICAL STORM WARNING...
.TROPICAL STORM HARVEY NEAR 30.5N 93.3W 993 MB AT 1500 UTC AUG 
30 MOVING NNE OR 020 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N 
SEMICIRCLE AND 70 NM S SEMICIRCLE.  ELSEWHERE OVER FORECAST 
WATERS N OF 26N W OF 87W WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 32.8N 
91.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST 
WATERS N OF 28N BETWEEN 87W AND 93W S TO SW WINDS 20 TO 25 KT. 
SEAS TO 8 FT. 
.48 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 35.8N 
88.3W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW HARVEY NEAR 38.5N 
84.5W. 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 61W AND 65W WINDS 20 KT 
OR LESS. SEAS TO 8 FT IN NE SWELL.
.48 HOUR FORECAST N OF 30N BETWEEN 50W AND 65W WINDS 20 KT OR 
LESS. SEAS TO 9 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 FROM 11.5N TO 14N BETWEEN 74W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.30 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.