000 AXNT20 KNHC 221755 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 205 PM EDT THU APR 22 2010 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1715 UTC... ...THE ITCZ... ITCZ AXIS IS CENTERED ALONG 8N13W 6N20W 2N30W 2N40W 1N50W. SCATTERED MODERATE CONVECTION IS OFF THE COAST OF WEST AFRICA FROM EQ-2N BETWEEN 6W-8W. SIMILAR CONVECTION IS FROM 7N-9N BETWEEN 12W-15W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS FROM EQ-3N BETWEEN 34W-44W. ISOLATED MODERATE CONVECTION IS ALONG THE COAST OF SOUTH AMERICA FROM 3N-8N BETWEEN 47W-51W. ...DISCUSSION... THE GULF OF MEXICO... AS OF 1500 UTC...A 1016 MB HIGH IS CENTERED OVER NORTH FLORIDA NEAR 31N84W PRODUCING FAIR WEATHER AND LIGHT ANTICYCLONIC SURFACE WINDS OVER THE NE GULF OF MEXICO. ELSEWHERE AN AREA OF BROKEN TO OVERCAST MULTILAYERED CLOUDS ARE OVER S TEXAS AND THE WESTERN GULF W OF 96W. IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS OVER THE GULF WITH AXIS ALONG 95W PRODUCING MOSTLY WESTERLY FLOW. CONSIDERABLE UPPER LEVEL HIGH CLOUDS AND UPPER LEVEL MOISTURE ARE OVER THE W GULF W OF 90W. STRONG SUBSIDENCE IS OVER THE E GULF. EXPECT IN 24 HOURS... FOR A SURFACE LOW TO BE OVER S TEXAS WITH SHOWERS. ALSO EXPECT SURFACE HIGH PRESSURE RETURN FLOW TO BE OVER THE REMAINDER OF THE GULF WITH HIGHER WINDS OVER THE W GULF DUE TO A STRONGER SURFACE PRESSURE GRADIENT. THE CARIBBEAN SEA... FRESH TO STRONG TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH STRONGEST WINDS ALONG THE COASTS OF N COLOMBIA AND VENEZUELA. A 1008 MB LOW IS CENTERED OVER N COLOMBIA NEAR 7N73W. SCATTERED SHOWERS ARE ALONG THE COAST OF N COLOMBIA...AND OVER THE LEEWARD ISLANDS TO INCLUDE PUERTO RICO AND THE VIRGIN ISLANDS. MOSTLY FAIR WEATHER IS OVER THE NW CARIBBEAN. IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS OVER THE CARIBBEAN WITH RIDGE AXIS ALONG 10N BETWEEN 60W-90W PRODUCING LIGHT ANTICYCLONIC UPPER LEVEL WINDS. STRONG SUBSIDENCE IS OVER THE W CARIBBEAN W OF 76W. CONSIDERABLE UPPER LEVEL MOISTURE AND HIGH CLOUDS ARE OVER THE REMAINDER OF THE CARIBBEAN. EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS. THE ATLANTIC OCEAN... A FORMING COLD FRONT IS OVER THE W ATLANTIC ALONG 32N72W 30N77W. A PREFRONTAL TROUGH IS ALONG 31N70W 28N78W. ISOLATED SHOWERS ARE FROM 28N-30N BETWEEN 73W-77W. A 1014 MB HIGH IS FURTHER NE NEAR 35N58W. A 1012 MB LOW IS CENTERED N OF THE LEEWARD ISLANDS NEAR 26N62W. A SURFACE TROUGH EXTENDS S FROM THE LOW TO NEAR PUERTO RICO. A STATIONARY FRONT ALSO EXTENDS E FROM THE LOW TO 25N46W. SCATTERED SHOWERS ARE WITHIN 90 NM OF THE FRONT. A COLD FRONT IS OVER THE CENTRAL ATLANTIC FROM 32N33W TO 25N46W. SCATTERED SHOWERS ARE WITHIN 45 NM OF THE FRONT. FURTHER E...A 1020 MB HIGH IS CENTERED OVER THE E ATLANTIC NEAR 26N27W PRODUCING FAIR WEATHER OVER THE CANARY ISLANDS. IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER THE W ATLANTIC N OF 20N W OF 55W. A LARGE UPPER LEVEL HIGH IS CENTERED E OF TRINIDAD NEAR 12N50W. ANTICYCLONIC FLOW IS S OF 20N W OF 30W. AN UPPER LEVEL TROUGH IS OVER THE E ATLANTIC AND W AFRICA N OF THE EQUATOR E OF 30W. EXPECT IN 24 HOURS FOR THE TWO FRONTS TO MOVE E WITH SHOWERS. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORMOSA