000 AXNT20 KNHC 220605 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT FRI APR 22 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 THE BORDER OF THE IVORY COAST AND LIBERIA...CROSSING THE EQUATOR ALONG 15W...TO 4S20W AND 7S26W...INTO THE NORTHEASTERN BRAZIL COAST NEAR 4S38W. NUMEROUS STRONG RAINSHOWERS AND THUNDERSTORMS ARE FROM 4N TO 8N BETWEEN 10W AND 14W. ISOLATED MODERATE RAINSHOWERS AND POSSIBLE THUNDERSTORMS ARE ELSEWHERE TO THE SOUTH OF 5N BETWEEN 18W AND THE EXTREME NORTHEASTERN COAST OF BRAZIL AND POSSIBLY NEAR FRENCH GUIANA. ...DISCUSSION... THE GULF OF MEXICO... MIDDLE LEVEL TO UPPER LEVEL WESTERLY WIND FLOW SPANS THE AREA. A WARM FRONT COLD FRONT PASSES THROUGH EXTREME NORTHERN LOUISIANA INTO NORTHERN TEXAS TOWARD 32N100W...EVENTUALLY CURVING TOWARD THE TEXAS AND OKLAHOMA PANHANDLE. THE SURFACE PRESSURE GRADIENT BETWEEN THE HIGH PRESSURE THAT IS IN THE EASTERN GULF OF MEXICO...AND THE BROAD LOW PRESSURE WITH THE FRONTAL BOUNDARY WILL RESULT IN MODERATE TO FRESH SOUTHEASTERLY RETURN FLOW IN THE GULF OF MEXICO UNTIL AT LEAST MONDAY OF THE NEXT WEEK. THE CARIBBEAN SEA... BROAD UPPER LEVEL SOUTHWESTERLY WIND FLOW COVERS THE AREA. RAINSHOWERS ARE POSSIBLE IN SMALL CLUSTERS OF LOW CLOUDS... MOSTLY TO THE NORTH OF 16N TO THE EAST OF 80W...AND TO THE SOUTH OF 16N TO THE EAST OF 70W. THE ATLANTIC OCEAN... BROAD UPPER LEVEL CYCLONIC FLOW COVERS THE ATLANTIC OCEAN TO THE NORTH OF 20N BETWEEN 50W AND 80W. AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 27N67W. A 1010 MB LOW PRESSURE CENTER IS NEAR 25N63W. SCATTERED MODERATE RAINSHOWERS AND POSSIBLE THUNDERSTORMS ARE FROM 23N TO 31N BETWEEN 55W AND 70W. ISOLATED MODERATE RAINSHOWERS ARE ELSEWHERE TO THE NORTH OF 12N BETWEEN 50W AND 60W...AND TO THE NORTH OF 20N BETWEEN 60W AND 74W. BROAD UPPER LEVEL WESTERLY-TO-SOUTHWESTERLY WIND FLOW COVERS THE AREA TO THE EAST OF 50W. ONE SURFACE RIDGE EXTENDS FROM A 1029 MB HIGH PRESSURE CENTER THAT IS NEAR 34N39W TO 22N34W AND 5N24W. A SECOND SURFACE RIDGE EXTENDS FROM THE SAME 1029 MB HIGH PRESSURE CENTER TO 34N55W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ MT