000 AXNT20 KNHC 111040 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT SUN APR 11 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1015 UTC... ...THE ITCZ... THE ITCZ AXIS IS CENTERED ALONG 4N8W 3N20W 1N30W TO THE NE BRAZIL COAST NEAR 1N50W. SCATTERED MODERATE TO STRONG CONVECTION IS ALONG THE COAST OF WEST AFRICA FROM 1N-8N BETWEEN 10W-14W. SIMILAR CONVECTION IS FROM 2N-4N BETWEEN 16W-22W. SCATTERED MODERATE CONVECTION IS FROM 1N-3N BETWEEN 24W-27W. SIMILAR CONVECTION IS ALONG THE COAST OF BRAZIL FROM 1S-EQ BETWEEN 48W-50W. ...DISCUSSION... GULF OF MEXICO... AS OF 0900 UTC...A SURFACE TROUGH EXTENDS FROM N FLORIDA TO THE NE GULF OF MEXICO ALONG 31N80W 25N85W. BROKEN TO OVERCAST MULTILAYERED CLOUDS ARE OVER FLORIDA AND THE NE GULF E OF 85W. ISOLATED SHOWERS ARE NOTED ON RADAR OVER S FLORIDA MOVING W WITH THE SURFACE FLOW. SCATTERED SHOWERS ARE ALSO NOTED ON RADAR OVER W FLORIDA AND THE E GULF MOVING E WITH THE UPPER LEVEL FLOW. ELSEWHERE...15-20 KT SE SURFACE FLOW WITH FAIR WEATHER IS OVER THE NW GULF ALONG THE COAST OF LOUISIANA. MORE SCATTERED SHOWERS ARE SEEN OVER THE SW GULF S OF BROWNSVILLE TEXAS MOVING E WITH THE UPPER LEVEL FLOW. TEMPERATURES RANGE FROM THE 50'S OVER THE N GULF STATES TO THE 70'S OVER S FLORIDA AND S TEXAS. IN THE UPPER LEVELS...A SHORT WAVE TROUGH IS OVER THE E GULF MOVING QUICKLY E SUPPORTING THE SURFACE TROUGH. SIGNIFICANT UPPER LEVEL MOISTURE AND BROKEN TO OVERCAST HIGH CLOUDS ARE OVER THE E GULF E OF 85W...AND THE W GULF W OF 90W. STRONG SUBSIDENCE IS OVER THE NORTH CENTRAL GULF. EXPECT...THE SHORT WAVE TROUGH AND SURFACE TROUGH TO MOVE QUICKLY OVER FLORIDA OVER THE NEXT 6 HOURS FOLLOWED BY ZONAL UPPER LEVEL FLOW ALOFT AND SURFACE HIGH PRESSURE RETURN FLOW AT THE SURFACE...WITH SHOWERS OVER THE W GULF. CARIBBEAN SEA... A 1009 MB LOW IS CENTERED OVER N COLOMBIA NEAR 9N75W. FRESH TO STRONG TRADEWINDS ARE OVER THE CARIBBEAN SEA AND CENTRAL AMERICA WITH STRONGEST WINDS ALONG THE COAST OF COLOMBIA. WIDELY SCATTERED MODERATE CONVECTION IS INLAND OVER N COLOMBIA AND NW VENEZUELA FROM 7N-11N BETWEEN 70W-75W. SCATTERED SHOWERS ARE OVER PANAMA...COSTA RICA...INLAND HONDURAS AND INLAND NICARAGUA...HISPANIOLA...AND THE WINDWARD ISLANDS S OF 15N E OF 63W. EXPECT...CONTINUED SHOWERS OVER THE SOUTHERN CARIBBEAN S OF 15N OVER THE NEXT 24 HOURS. ATLANTIC OCEAN... A 1030 MB HIGH IS CENTERED OFF THE COAST OF NORTH CAROLINA NEAR 36N73W. A COLD FRONT IS OVER THE W ATLANTIC FROM 32N62W TO 28N70W. SCATTERED SHOWERS ARE WITHIN 30 NM OF THE FRONT. A 1031 MB HIGH IS OVER THE CENTRAL ATLANTIC NEAR 38N45W. IN THE TROPICS... A BAND OF LOW CLOUDS AND SHOWERS ARE E OF THE LESSER ANTILLES FROM 11N-18N BETWEEN 50W-60W. IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER THE W ATLANTIC W OF 70W. AN UPPER LEVEL RIDGE IS N OF 20N BETWEEN 60W-70W. AN UPPER LEVEL TROUGH IS N OF 20N BETWEEN 50W-60W. AN UPPER LEVEL RIDGE IS N OF 20N BETWEEN 40W-50W. ZONAL FLOW IS OVER THE REMAINDER OF THE AREA. EXPECT THE W ATLANTIC COLD FRONT TO MOVE E TO 32N58W IN 24 HOURS WITH SHOWERS. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORMOSA