High Seas Forecast
Issued by NWS

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000
FZNT02 KNHC 200246
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC WED SEP 20.
24 HOUR FORECAST VALID 0000 UTC THU SEP 21.
48 HOUR FORECAST VALID 0000 UTC FRI SEP 22.

.WARNINGS.

.ATLC AND CARIBBEAN HURRICANE WARNING...
.HURRICANE MARIA NEAR 17.3N 64.7W 909 MB AT 0300 UTC SEP 20
MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 150 KT
GUSTS 185 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NW AND SE
QUADRANTS...130 NM NE QUADRANT AND 100 NM SW QUADRANT.SEAS 12
FT OR GREATER WITHIN 150 NM S SEMICIRCLE...180 NM NE QUADRANT
AND 90 NM NW QUADRANT WITH SEAS TO 45 FT. ELSEWHERE WITHIN 300
NM NE AND 150 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 10 TO 11
FT. REMAINDER WATERS FROM 13N TO 26N BETWEEN 58W AND 68W WINDS
20 KT OR LESS. SEAS TO 11 FT IN MIXED SWELL. NUMEROUS TSTMS AND
SQUALLS WITHIN 90 NM OF CENTER.
.24 HOUR FORECAST HURRICANE MARIA NEAR 18.9N 67.3W. MAXIMUM
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM NW AND SE QUADRANTS...140 NM NE QUADRANT AND 110
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM NE AND 90 NM
SW SEMICIRCLES OF CENTER WITH SEAS TO 49 FT. ELSEWHERE WITHIN
300 NM N...210 NM SE...AND 180 NM SW QUADRANTS OF LOW WINDS 20
TO 33 KT. SEAS 8 TO 11 FT. REMAINDER ATLC FROM 18N TO 27N
BETWEEN 60W AND 71W WINDS 20 KT OR LESS. SEAS TO 11 FT IN MIXED
SWELL.
.48 HOUR FORECAST HURRICANE MARIA NEAR 20.9N 69.7W. 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. SEAS 12 FT OR GREATER WITHIN 300 NM N...240 NM SE AND
90 NM SW QUADRANTS OF CENTER WITH SEAS TO 48 FT. ELSEWHERE
WITHIN 300 NM NE AND 120 NM SW SEMICIRCLES OF LOW WINDS 20 TO 33
KT. SEAS 8 TO 11 FT. ELSEWHERE ATLC E OF BAHAMAS S OF 31N
BETWEEN 62W AND 77W WINDS 20 KT OR LESS. SEAS TO 11 FT IN MIXED
SWELL.
.72 HOUR FORECAST HURRICANE MARIA NEAR 23.3N 71.4W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIA NEAR 26.2N 72.2W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT.
.120 HOUR FORECAST HURRICANE MARIA NEAR 29.5N 72.5W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT.

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

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...
.ATLC LOW PRES...REMNANT LOW OF LEE...NEAR 17.5N45W 1008 MB.
WITHIN 75 NM E QUADRANT OF LOW WINDS 30 TO 40 KT. SEAS 10 TO 12
FT. ELSEWHERE WITHIN 210 NM NE SEMICIRCLE WINDS 20 TO 30 KT.
SEAS 8 TO 11 FT. SCATTERED MODERATE ISOLATED STRONG FROM 17N TO
21N BETWEEN 43W AND 46W.
.24 HOUR FORECAST LOW PRES NEAR 20N47W 1011 MB. WITHIN 240 NM NE
QUADRANT SE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW PRES NEAR 22N50W 1012 MB. FROM 23N TO 26N
BETWEEN 47W AND 49W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SE
SWELL.

.SYNOPSIS AND FORECAST.

.N OF LINE FROM 30N78W TO 27N73W TO 27N68W TO 30N61W WINDS 20 KT
OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 64W AND 77W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN N SWELL.
.48 HOUR FORECAST CONDITIONS MERGE.

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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