000
FZNT23 KNHC 131527
OFFNT3

OFFSHORE WATERS FORECAST FOR THE SW AND TROPICAL N ATLANTIC AND 
CARIBBEAN SEA 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1130 AM EDT TUE APR 13 2010

OFFSHORE WATERS FORECAST FOR THE TROPICAL N ATLC FROM 07N TO 22N 
BETWEEN 55W AND 65W...THE SW N ATLANTIC S OF 31N W OF 65W 
INCLUDING BAHAMAS...AND THE CARIBBEAN SEA.

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.

AMZ089-132130-
SYNOPSIS FOR CARIBBEAN SEA AND TROPICAL N ATLC FROM 07N TO 22N 
BETWEEN 55W AND 65W
1130 AM EDT TUE APR 13 2010

.SYNOPSIS...WEAK LOW PRES TROUGH ACROSS MONA CHANNEL MOVE SLOWLY 
NE INTO CENTRAL ATLC THROUGH SAT. FLAT PRES GRADIENT EFFECTIVELY 
DAMPENS TRADE WINDS THROUGH ENTIRE EASTERN HALF WHILE INCREASING 
NE FLOW OVER NW CARIBBEAN.  BY THU TROUGH IS FAR ENOUGH INTO 
CENTRAL ATLC THAT HIGH PRES FORCES FRESH TO STRONG BREEZE INTO 
EASTERN CARIBBEAN AND TROPICAL N ATLC N OF 16N THROUGH SAT. 

$$
AMZ082-132130-
NW CARIBBEAN N OF 15N W OF 75W
1130 AM EDT TUE APR 13 2010

.THIS AFTERNOON THROUGH WED...N OF 18N NE TO E WINDS 10 TO 15 KT 
BECOME NE 20 KT TONIGHT THEN INCREASE TO 25 KT LATE WED. SEAS 4 
FT BUILD TO 7 FT BY WED. S OF 18N NE TO E WINDS 10 KT BECOME NE 
15 KT WED. SEAS 4 FT. 
.WED NIGHT AND THU...N OF 18N NE TO E WINDS 20 TO 25 KT. SEAS 8 
FT. S OF 18N NE WINDS 15 KT EXCEPT TO 20 KT E OF 80W. SEAS 4 FT 
EXCEPT TO 7 FT E OF 80W.
.FRI AND SAT...N OF 18N E WINDS 20 KT FRI DIMINISH TO 15 KT LATE 
FRI THEN SHIFT SE SAT. SEAS 8 FT FRI SUBSIDE TO 3 FT LATE SAT. S 
OF 18N NE TO E WINDS 10 TO 15 KT SHIFT SE SAT. SEAS 5 FT SUBSIDE 
TO 3 FT SAT.

$$
AMZ084-132130-
SW CARIBBEAN S OF 15N W OF 75W  
1130 AM EDT TUE APR 13 2010

.THIS AFTERNOON THROUGH WED NIGHT...W OF 80W N TO NE WINDS 10 KT 
BECOME NE 10 TO 15 KT WED. SEAS 4 FT. E OF 80W NE TO E WINDS 15 
KT DIMINISH TO 10 KT WED. SEAS 5 FT IN E SWELL SUBSIDE TO 3 FT 
WED.
.WED NIGHT THROUGH FRI...W OF 80W N TO NE WIND 10 KT. SEAS 3 FT. 
E OF 80W NE TO E WINDS 15 KT DIMINISH TO 10 KT FRI. SEAS 5 FT. 
.SAT...N OF 11N E OF 78W E WINDS 15 KT EXCEPT TO 20 KT ALONG 
COAST OF COLOMBIA. SEAS 5 FT. ELSEWHERE E WINDS 10 KT. SEAS 3 FT.

$$
AMZ086-132130-
E CARIBBEAN E OF 75W TO THE LEEWARD AND WINDWARD ISLANDS
1130 AM EDT TUE APR 13 2010

.THIS AFTERNOON AND TONIGHT...S OF 15N E OF 68W NE TO E WINDS 15 
KT. SEAS 4 FT. ELSEWHERE NE TO E WINDS 15 TO 20 KT DIMINISH TO 
15 KT N OF 15N TUE NIGHT. SEAS 7 FT SUBSIDE TO 4 FT TUE NIGHT.
.WED THROUGH SAT...W OF 68W NE WINDS 15 KT INCREASE TO 20 KT THU 
BECOME E 20 TO 25 KT FRI. SEAS 5 FT BUILD TO 8 FT N PORTIONS FRI 
AND SAT. E OF 68W E TO SE WINDS 10 TO 15 KT BECOME E WED NIGHT 
THEN INCREASE N OF 14N TO 25 KT FRI AND SAT. SEAS 4 FT S 
PORTIONS AND BUILD TO 7 FT.

$$
AMZ087-132130-
TROPICAL N ATLANTIC FROM 07N TO 22N BETWEEN 55W AND 65W 
1130 AM EDT TUE APR 13 2010
 
.THIS AFTERNOON AND TONIGHT...N OF 16N NE TO E WINDS 20 KT AND 
GUSTY. SEAS 8 FT. S OF 16N E WINDS 15 TO 20 KT. SEAS 6 FT.
.WED AND WED NIGHT...SE TO S WINDS 10 TO 15 KT. SEAS 8 FT IN E 
SWELL.
.THU...S TO SW WINDS 10 TO 15 KT SHIFT NE LATE. SEAS 6 FT. 
.FRI AND SAT...N OF 18N NE WINDS 20 KT. SEAS 8 FT. S OF 18N E 
WINDS 10 TO 15 KT. SEAS 5 FT.

$$
AMZ088-132130-
SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS 
1130 AM EDT TUE APR 13 2010

.SYNOPSIS...TROUGH ACROSS MONA CHANNEL TODAY MOVE E OF AREA 
TONIGHT AS HIGH PRES ACROSS NE U.S. SHIFTS SE AND STRENGTHENS 
ACROSS REGION.  MODERATE TO STRONG NE WINDS DOMINATE MOST OF 
BASIN THROUGH THU.  HIGH PRES SHIFT E OFF N FLORIDA AND INTO N 
PORTIONS SAT AND ALLOW WINDS TO DIMINISH.

$$
AMZ080-132130-
SW N ATLANTIC S OF 31N W OF 65W INCLUDING BAHAMAS 
1130 AM EDT TUE APR 13 2010

.THIS AFTERNOON...N OF 23N NE WIND 20 KT INCREASE TO 25 KT LATE. 
SEAS 7 FT BUILD TO 9 FT LATE. S OF 23N NE TO E WINDS 15 KT 
INCREASE TO 20 KT LATE. SEAS 7 FT BUILD TO 9 FT LATE.
.TONIGHT THROUGH THU...NE WINDS 20 TO 25 KT DIMINISH TO 15 KT N 
OF 29N W OF 70W LATE THU. SEAS TO 11 FT SUBSIDE TO 7 FT N OF 29N 
W OF 70W LATE THU. 
.FRI AND SAT...N OF 27N N TO NE WINDS 10 KT. SEAS TO 8 FT IN 
SUBSIDING NE SWELL. S OF 27N NE WINDS 15 TO 20 KT. SEAS TO 10 FT 
IN SUBSIDING NE SWELL.

$$ 
FORECASTER WALLY BARNES