000
AXNT20 KNHC 040551
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL  
205 AM EDT MON APR 04 2011

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTION 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 0515 UTC.

...THE ITCZ...

FROM SOUTHERN LIBERIA TO 2N20W...CROSSING THE EQUATOR ALONG 
35W...REACHING BRAZIL NEAR 2S45W. ISOLATED MODERATE RAINSHOWERS 
ARE TO THE SOUTH OF 07N TO THE EAST OF 51W.

...DISCUSSION...

THE GULF OF MEXICO...
MIDDLE LEVEL TO UPPER LEVEL WESTERLY TO SOUTHWESTERLY WIND FLOW
COVERS THE AREA FROM MEXICO INTO THE GULF OF MEXICO...AND BEYOND
FLORIDA INTO THE WESTERN ATLANTIC OCEAN. A SURFACE RIDGE PASSES 
THROUGH AN ATLANTIC OCEAN 1022 MB HIGH PRESSURE CENTER THAT IS 
NEAR 32N74W...ACROSS NORTHERN FLORIDA TO 30N88W NEAR THE 
MISSISSIPPI/ALABAMA BORDER...ACROSS SOUTHERN LOUISIANA AND
BEYOND THE UPPER TEXAS COAST.

THE CARIBBEAN SEA...
UPPER LEVEL SOUTHWESTERLY WIND FLOW COVERS THE AREA AT THIS 
MOMENT. SCATTERED MODERATE RAINSHOWERS AND ISOLATED STRONG 
THUNDERSTORMS ARE OCCURRING IN SOUTHWESTERN HAITI. OTHER 
RAINSHOWERS ARE POSSIBLE IN LINES OF LOW CLOUDS THROUGHOUT
THE REST OF THE AREA.

THE ATLANTIC OCEAN...
A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N58W
TO 27N60W. THIS TROUGH SUPPORTS COLD FRONTS THAT ARE TO THE
EAST OF THE 1022 MB HIGH CENTER. A DISSIPATING COLD FRONT
PASSES FROM 33N47W TO 25N60W...TO SOUTHEASTERN CUBA.
A RE-INFORCING SHOT OF COLD AIR...CLOUDS...AND POSSIBLE 
PRECIPITATION ARE ASSOCIATED WITH THAT BOUNDARY. SURFACE 
ANTICYCLONIC WIND FLOW MOVES AROUND A RIDGE THAT PASSES
THROUGH 32N25W TO A 1025 MB HIGH PRESSURE CENTER THAT IS NEAR 
31N31W TO 28N41W TO 24N51W. GALE FORCE WIND CONDITIONS ARE 
FORECAST TO DEVELOP TO THE NORTH OF 30N TO THE EAST 20W DURING 
THE NEXT 24 HOURS. PLEASE REFERENCE THE METEO FRANCE MARINE 
FORECASTS REGARDING ITS AREAS THAT ARE TO THE EAST OF 35W.
 
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT