000
AGXX40 KNHC 211805
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 PM EST MON JAN 21 2008
 
MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

UPPER LEVELS...
HIGH CENTERED NEAR 22N55W WITH RIDGE ACROSS THE CARIBBEAN SEA 
AND CENTRAL AMERICA. SOUTHWESTERLY FLOW IS NORTHWEST OF THE 
RIDGE OVER THE GULF OF MEXICO FLORIDA AND THE NORTHWEST HALF OF 
THE SOUTHWEST NORTH ATLANTIC.  BY TUESDAY THE RIDGE WILL BE 
SOUTH OF 23N WITH BROAD WESTERLY FLOW NORTH OF 23N. THE 
WESTERLIES WILL GRADUALLY STRENGTHEN THROUGH THURSDAY WHEN A 
STRONG SHORTWAVE WILL MOVE OFF THE U.S. EAST COAST. ON FRIDAY A 
TROUGH WILL BE OVER THE ATLANTIC AREA NORTH OF 25N WITH A RIDGE 
ELSEWHERE INCLUDING THE GULF OF MEXICO. ON SATURDAY THE TROUGH 
WILL MOVE EAST OF 70W WITH A HIGH CENTERED OVER THE SOUTHERN 
GULF OF MEXICO NEAR 22N92W AND A RIDGE OVER THE REMAINDER OF THE 
AREA.

SURFACE...
FRONT FROM NEAR 31N50W TO WINDWARD PASSAGE AND STRONG RIDGE JUST 
EAST OF THE MID ATLANTIC U.S. IS PRODUCING WINDS OF UP TO 30 KT 
IN THE ATLANTIC NORTH OF THE FRONT AND ALSO OVER THE GULF OF 
MEXICO N OF 23N.  THE ASSOCIATED PRESSURE GRADIENT BETWEEN THE 
HIGH AND BROAD LOW PRESSURE OVER NORTHERN SOUTH AMERICA IS ALSO 
CAUSING TRADES IN THE CARIBBEAN W OF ABOUT 80W OF 20 TO 25 KT 
AND TO 30 KT NEAR THE COAST OF COLOMBIA. THE HIGH WILL MOVE 
EAST WITH A WEAK PRESSURE GRADIENT OVER MOST OF THE AREA BY LATE 
TUESDAY...HOWEVER THE TRADES IN THE CARIBBEAN E OF 80W AND S OF 
18N WILL CONTINUE.  THE ABOVE MENTIONED STRONG SHORTWAVE WILL 
CONTRIBUTE TO BUILDING A STRONG HIGH PRESSURE OVER THE CENTRAL 
U.S. IN ITS WAKE WEDNESDAY. AS THE HIGH DEVELOPS AND MOVES EAST 
COUPLED WITH A STRONG LOW DEVELOPING NORTH OF BERMUDA WILL 
INCREASE THE WINDS OVER THE AREA NORTH OF 25N THURSDAY. BY 
FRIDAY THERE WILL BE STRONG HIGH PRESSURE OVER THE EASTERN U.S. 
WITH A COLD FRONT FROM NEAR 31N55W TO THE WINDWARD PASSAGE AND 
ACROSS THE NORTHWEST CARIBBEAN WITH WINDS ABOVE 20 KT NORTH OF 
THE FRONT. TRADES CONTINUE IN THE SOUTH CENTRAL CARIBBEAN. BY 
SATURDAY THE RIDGE WILL MOVE SOUTH TO NEAR 31N WITH THE STRONG 
WINDS MOSTLY SOUTH OF 25N EAST OF 87W.

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL