000
FZNT02 KNHC 210948
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU SEP 21.
24 HOUR FORECAST VALID 0600 UTC FRI SEP 22.
48 HOUR FORECAST VALID 0600 UTC SAT SEP 23.

.WARNINGS.

...ATLC AND CARIBBEAN HURRICANE WARNING...
.HURRICANE MARIA NEAR 19.6N 68.4W 959 MB AT 0900 UTC SEP 21 
MOVING NW OR 315 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 100 KT 
GUSTS 120 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM OF CENTER 
EXCEPT 130 NM NE QUADRANT.  SEAS 12 FT OR GREATER WITHIN 240 NM 
N SEMICIRCLE...180 NM SE QUADRANT AND 45 NM SW QUADRANT WITH 
SEAS TO 46 FT. ELSEWHERE WITHIN 300 NM N AND 270 NM S 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF 
ATLC AREA N OF 26N BETWEEN 62W AND 72W WINDS 20 KT OR LESS. SEAS 
TO 9 FT IN MIXED NW AND SE SWELL. 
.24 HOUR FORECAST HURRICANE MARIA NEAR 21.6N 70.4W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 100 
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 330 NM N AND 120 NM 
S SEMICIRCLES WITH SEAS TO 53 FT. ELSEWHERE OVER FOERCAST WATERS 
WITHIN 150 NM NW AND 210 NM SE SEMICIRCLES WINDS 20 TO 33 KT. 
REMAINDER OF ATLC OPEN WATERS N OF 19N BETWEEN 61W AND 78W WINDS 
20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE MARIA NEAR 24.3N 71.7W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM E SEMICIRCLE...110 NM SW QUADRANT AND 120 NM NW 
QUADRANT. SEAS 12 FT OR GREATER FORECAST OPEN WATERS WITHIN 510 
NM NW AND 240 NM SE SEMICIRCLE WITH SEAS TO 54 FT. ELSEWHERE 
WITHIN 210 NM NE AND 180 NM SW SEMICIRCLES WINDS 20 TO 33 KT. 
REMAINDER OF OPEN WATERS N OF 19N W OF 62W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE MARIA NEAR 27.4N 72.3W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIA NEAR 30.0N 72.0W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
.120 HOUR FORECAST HURRICANE MARIA NEAR 32.5N 70.5W. 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.

.SYNOPSIS AND FORECAST.

.ATLC LOW PRES...REMNANT OF LEE...NEAR 19N48W 1011 MB. WITHIN 
150 NM NE QUADRANT SE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. 
ELSEWHERE WITHIN 270 NM NE QUADRANT WINDS 20 KT OR LESS. SEAS 8 
FT IN SE SWELL. 
.24 HOUR FORECAST LOW PRES DISSIPATED. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

CONVECTION VALID AT 0915 UTC THU SEP 21...

.HURRICANE MARIA...NUMEROUS MODERATE SCATTERED STRONG WITHIN 90 
NM OF CENTER.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.