000
AGXX40 KNHC 041846
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
245 PM EDT SUN OCT 04 2009

ABOVE THE SURFACE...
IN THE MIDDLE LEVELS A TROUGH OVER THE SOUTHWEST CARIBBEAN WILL 
WEAKEN AND BECOME DIFFUSE TUESDAY. ELSEWHERE A WEAK RIDGE OVER 
THE AREA WILL EXPEND AND STRENGTHEN AND COVER THE ENTIRE AREA 
WEDNESDAY THROUGH FRIDAY.

IN THE UPPER LEVELS A TROUGH FROM NEAR BERMUDA TO ACROSS THE 
WINDWARD PASSAGE TO NICARAGUA WILL MOVE EAST NORTH OF THE 
GREATER ANTILLES PASSING EAST OF THE AREA TUESDAY AND FROM THE 
GREATER ANTILLES SOUTHWARD THE TROUGH WILL WEAKEN SLIGHTLY 
THROUGH TUESDAY THEN WEAKEN FURTHER WEDNESDAY AS THE DEEP LAYER 
RIDGE COVERS MOST OF THE AREA. A SMALL UPPER TROUGH WILL MOVE 
WESTWARD TO THE SOUTH OF THE GREATER ANTILLES THURSDAY AND 
FRIDAY.

SURFACE...
SOUTH OF 20N THE TRADE WINDS WILL BE NEAR TO SLIGHTLY LESS THAN 
NORMAL WITH EASTERLY WINDS IN THE 15 TO 20 KT RANGE. SEAS WILL 
BE LESS THAN NORMAL IN THE ATLANTIC THROUGH WEDNESDAY BECAUSE OF 
A LACK OF EASTERLY SWELL KEEPING THE SEAS IN THE 5 TO 7 FT RANGE.
ON THURSDAY AND FRIDAY SWELL FROM EAST WILL INCREASE THE SEAS 
NORTH OF 15N IN THE ATLANTIC AREA TO 8 TO 10 FT.

SOUTHERLY RETURN FLOW TO 20 KNOTS IN THE WESTERN GULF OF MEXICO 
WILL DIMINISH TONIGHT TO MOSTLY LESS THAN 20 KT THROUGH 
WEDNESDAY. ON THURSDAY AND FRIDAY SOUTHERLY WINDS WILL AGAIN BE 
20 KNOTS.

LOW PRESSURE OVER THE EASTERN UNITED STATES WILL INCREASE THE 
SOUTHWESTERLY WIND TO 20 KNOTS IN THE NORTHERN PART OF THE 
ATLANTIC AREA NORTH OF 30N WEDNESDAY. ASSOCIATED COLD FRONT WILL 
MOVE OFF GEORGIA COAST LATE WEDNESDAY. CONTINUING STRONG 
SOUTHWESTERLY WINDS EAST OF THE FRONT WILL REACH 20 TO 25 KT 
NORTH OF 27N WEDNESDAY NIGHT AND THURSDAY. BY FRIDAY THESE WINDS 
WILL BE EAST OF THE OFFSHORE AREA. NORTHERLY WINDS BEHIND THE 
FRONT WILL BRIEFLY REACH 20 KNOTS NORTH OF 30N. 

OTHERWISE WINDS WILL BE 15 KNOTS OR LESS. NORTH OF 25N THESE 
WINDS WILL BE SOUTHERLY WINDS AND FROM 20N TO 25N THESE WINDS 
WILL BE FROM THE EAST TO SOUTHEAST.

WARNINGS...

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE

$$
FORECASTER LL