000
AXNT20 KNHC 051129
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 AM EST THU MAR 05 2009

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST
FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.

BASED ON 0600 UTC SURFACE ANALYSIS...AND SATELLITE IMAGERY 
THROUGH 1045 UTC.

...THE ITCZ...

FROM SOUTHERN COASTAL LIBERIA TO THE EQUATOR ALONG 21W...
TO 2SN30W...INTO NORTHEASTERN BRAZIL NEAR 4S44W. SCATTERED 
MODERATE SHOWERS TO ISOLATED STRONG THUNDERSTORMS ARE FROM
1.5N TO 3.5N BETWEEN 14W AND 17W.

...DISCUSSION...

THE GULF OF MEXICO...
AN UPPER LEVEL RIDGE IS ALONG 95W IN THE WESTERN GULF OF MEXICO.
ANTICYCLONIC FLOW IS EVERYWHERE. BROAD SURFACE ANTICYCLONIC FLOW 
COVERS THE AREA. 

THE CARIBBEAN SEA...
A COLD FRONT CONTINUES FROM 20N64W...THROUGH THE PASSAGE BETWEEN 
THE U.S.A. VIRGIN ISLANDS AND PUERTO RICO...BARELY CLIPPING 
NORTHERN CURACAO...TO NORTHWESTERN VENEZUELA JUST TO THE EAST
OF THE PENINSULA DE PARAGUANA. A LARGE-SCALE UPPER LEVEL RIDGE 
IS BETWEEN 50W AND 60W FROM NORTHERN SOUTH AMERICA BEYOND 32N. 
BROKEN TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE PRECIPITATION
ARE BETWEEN 60W AND 70W. UPPER LEVEL SOUTHWESTERLY WIND FLOW 
MOVES FROM THE EASTERN PACIFIC OCEAN AT LEAST 660 NM TO THE 
WEST-SOUTHWEST OF COSTA RICA...ACROSS COSTA RICA AND SOUTHERN 
NICARAGUA...AND BEYOND HISPANIOLA.

THE ATLANTIC OCEAN...
A WESTERN ATLANTIC OCEAN DEEP LAYER TROUGH SUPPORTS THE CURRENT 
COLD FRONT THAT PASSES THROUGH 32N55W TO 25N60W TO 20N64W AND 
BEYOND INTO THE CARIBBEAN SEA. POSSIBLE SHOWERS ARE WITHIN
9O NM ON EITHER SIDE OF 21N61W TO 25N56W BEYOND 32N53W. BROAD
SURFACE ANTICYCLONIC FLOW IS AROUND A 1034 MB EASTERN NORTH 
CAROLINA HIGH PRESSURE CENTER. BROAD SURFACE ANTICYCLONIC FLOW 
IS AROUND A 1039 MB HIGH PRESSURE CENTER NEAR 38N33W...FROM THE 
ITCZ NORTHWARD...BETWEEN AFRICA AND THE COLD FRONT. A MIDDLE TO 
UPPER LEVEL TROUGH IS ALONG 27N29W 24N31W 15N34W TO 6N40W.

$$
MT