000
FZNT02 KNHC 201004
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC WED SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED SEP 20.
24 HOUR FORECAST VALID 0600 UTC THU SEP 21.
48 HOUR FORECAST VALID 0600 UTC FRI SEP 22.

.WARNINGS.

...ATLC AND CARIBBEAN HURRICANE WARNING...
.HURRICANE MARIA NEAR 17.9N 65.6W 917 MB AT 0900 UTC SEP 20
MOVING NW OR 305 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 135 KT
GUSTS 165 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NW AND SE
QUADRANTS...130 NM NE QUADRANT AND 100 NM SW QUADRANT. WINDS 20
TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 150 NM S SEMICIRCLE...180
NM NE QUADRANT AND 120 NM NW QUADRANT WITH SEAS TO 45 FT. 
ELSEWHERE ATLC WATERS FROM 20N TO 24N BETWEEN 60W AND 67W WINDS
20 KT OR LESS. SEAS 8 TO 12 FT PRIMARILY IN SE SWELL. ELSEWHERE
CARIBBEAN WATERS N OF 12N E OF 70W WINDS 20 KT OR LESS. SEAS 8 TO
12 FT IN N SWELL. 
.24 HOUR FORECAST HURRICANE MARIA NEAR 19.5N 68.2W. MAXIMUM 
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NW AND SE QUADRANTS...140 NM NE QUADRANT AND 110 NM
SW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER IN 270 
N AND 210 NM S SEMICIRCLE WITH SEAS TO 42 FT. ELSEWHERE ATLC
WATERS FROM 22N TO 27N BETWEEN 61W AND 72W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN SE SWELL. ELSEWHERE S OF ATLC FROM 15N TO
17.5N BETWEEN 63W AND 70W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN
MIXED SWELL. N OF 27N BETWEEN 62W AND 72W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN MIXED NW AND SE SWELL. 
.48 HOUR FORECAST HURRICANE MARIA NEAR 21.5N 70.5W. MAXIMUM 
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM E SEMICIRCLE...110 NM SW QUADRANT AND 130 NM NW 
QUADRANT. ELSEWHERE WITHIN 180 NM N AND 120 NM S SEMICIRCLES 
WINDS 20 TO 33 KT. SEAS 12 FT OR GREATER WITHIN 450 NM NE AND 120
NM S SEMICIRCLES WITH SEAS TO 41 FT IN MIXED SWELL. REMAINDER OF
OPEN WATERS N OF 19N BETWEEN 60W AND 77W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE MARIA NEAR 24.2N 72.0W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIA NEAR 27.3N 73.0W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE MARIA NEAR 30.5N 73.0W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT.

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

...ATLC GALE WARNING...
.LOW PRES...REMNANT OF LEE...NEAR 18N45W 1008 MB. WITHIN 270 NM
NE QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
21N49W 1012 MB. WITHIN 210 NM N SEMICIRCLE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT. 
.48 HOUR FORECAST LOW PRES NEAR 27N48W 1014 MB. WITHIN 120 NM NE
QUADRANT WINDS 20 TO 25 KT. SEAS 8 FT.

.SYNOPSIS AND FORECAST.

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

$$

CONVECTION VALID AT 0930 UTC WED SEP 20...

.HURRICANE MARIA...NUMEROUS STRONG WITHIN 90 NM OF CENTER.
NUMEROUS MODERATE SCATTERED STRONG WITHIN ELSEWHERE WITHIN 150 NM
OF CENTER.

.LOW PRES NEAR 18N45W...NUMEROUS MODERATE SCATTERED STRONG FROM
18N TO 19N BETWEEN 42W AND 45W.

.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.