High Seas Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
000
FZNT02 KNHC 201447
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC WED SEP 20.
24 HOUR FORECAST VALID 1200 UTC THU SEP 21.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 22.

.WARNINGS.

...ATLC AND CARIBBEAN HURRICANE WARNING...

.HURRICANE MARIA NEAR 18.4N 66.5W 930 MB AT 1500 UTC SEP 20
MOVING NW OR 305 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 120 KT
GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NW AND SE
QUADRANTS...130 NM NE AND 100 NM SW QUADRANTS.SEAS 12 FT OR
GREATER WITHIN 180 NM S SEMICIRCLE...210 NM NE AND 150 NM NW
QUADRANT WITH SEAS TO 37 FT. ELSEWHERE WITHIN 210 NM OF CENTER
WINDS 20 TO 33 KT. SEAS 10 TO 15 FT. REMAINDER ATLC WATERS FROM
16N TO 25N BETWEEN 60W AND 68W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT PRIMARILY IN SE SWELL. REMAINDER CARIBBEAN WATERS N OF 11.5N
BETWEEN 61W AND 71W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
PRIMARILY IN MIXED SWELL. NUMEROUS STRONG WITHIN 90 NM OF
CENTER. SCATTERED MODERATE TO STRONG IN BANDS ELSEWHERE WITHIN
210 NM OF CENTER.
.24 HOUR FORECAST HURRICANE MARIA NEAR 20.2N 69.0W. MAXIMUM
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM NW AND SE QUADRANTS...140 NM NE AND 110 NM SW
QUADRANTS. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN
240 NM SE AND 150 NM NW SEMICIRCLES WITH SEAS TO 50 FT.
ELSEWHERE ATLC WATERS FROM 19N TO 31N BETWEEN 61W AND 74W WINDS
20 KT OR LESS. SEAS 8 TO 11 FT PRIMARILY IN MIXED N AND SE
SWELL. ELSEWHERE CARIBBEAN N OF 14N BETWEEN 65W AND 72W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT PRIMARILY IN MIXED SWELL. SCATTERED
MODERATE TO STRONG IN BANDS WITHIN 240 NM OF CENTER.
.48 HOUR FORECAST HURRICANE MARIA NEAR 22.4N 71.0W. MAXIMUM
SUSTAINED WINDS 120 KT GUSTS 145 KT. TROPICAL STORM FORCE WINDS
WITHIN 150 NM E SEMICIRCLE...110 NM SW AND 130 NM NW QUADRANTS.
WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 210 NM E AND
120 NM W SEMICIRCLES WITH SEAS TO 52 FT. ELSEWHERE OPEN ATLC
WATERS FROM 19N TO 31N BETWEEN 60W AND 80W WINDS 20 KT OR LESS.
SEAS 8 TO 15 FT PRIMARILY IN MIXED N AND SE SWELL. SCATTERED
MODERATE TO STRONG IN BANDS WITHIN 240 NM OF CENTER.
.72 HOUR FORECAST HURRICANE MARIA NEAR 25.3N 72.4W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIA NEAR 28.5N 73.0W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE MARIA NEAR 31.5N 73.0W. 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.

...ATLC GALE WARNING...
.LOW PRES...REMNANT OF LEE...NEAR 18N46W 1007 MB. WITHIN 300 NM
NE SEMICIRCLE E TO SE WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
SCATTERED MODERATE ISOLATED STRONG WITHIN 180 NM OF LINE FROM
31N41W TO 24N44W TO 17N43W.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
21N49W 1012 MB. WITHIN 150 NM N SEMICIRCLE E TO SE WINDS 20 TO
25 KT. SEAS TO 10 FT. ELSEWHERE WITHIN 150 NM OF LINE FROM
28N40W TO 21N51W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED E
AND SE SWELL. SCATTERED MODERATE ISOLATED STRONG WITHIN 540 NM
NE QUADRANT OF LOW.
.48 HOUR FORECAST LOW PRES NEAR 28N49W 1014 MB. WITHIN 180 NM E
SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS TO 8 FT.

.SYNOPSIS AND FORECAST.

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

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.