000 AXNT20 KNHC 190012 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 805 PM EDT TUE APR 18 2006 TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHEASTERN SECTIONS OF SOUTH AMERICA...AND THE ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS... RADAR...AND METEOROLOGICAL ANALYSIS. BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 2315 UTC. ...ITCZ... ITCZ AXIS IS CENTERED ALONG 7N12W 1N30W EQ40W 2N50W. SCATTERED MODERATE CONVECTION IS FROM 1N-5N BETWEEN 15W-20W. WIDELY SCATTERED MODERATE CONVECTION IS FROM EQ-3N BETWEEN 30W-33W. ...DISCUSSION... GULF OF MEXICO... A WEAK 1015 MB HIGH IS CENTERED OVER THE STRAITS OF FLORIDA NEAR 24N81W. FAIR WEATHER AND LIGHT SE FLOW COVERS THE ENTIRE GULF OF MEXICO. A COLD FRONT EXTENDS FROM S GEORGIA TO NE FLORIDA NEAR ST AUGUSTINE DRIFTING SE. PATCHES OF WIDELY SCATTERED MODERATE CONVECTION IS ALONG THE FRONT. IN THE UPPER LEVELS...WESTERLY ZONAL FLOW WITH STRONG SUBSIDENCE PREVAILS. EXPECT THE COLD FRONT TO EXTEND FROM S GEORGIA TO CENTRAL FLORIDA WEDNESDAY EVENING WITH LIGHT CONVECTION. LITTLE CHANGE IS EXPECTED OVER THE GULF OF MEXICO. CARIBBEAN SEA... SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS LOCATED OVER N COLOMBIA AND NW VENEZUELA FROM 6N-11N BETWEEN 70W-77W. SCATTERED SHOWERS ARE OVER THE HIGHER ELEVATIONS OF E CUBA AND CENTRAL HISPANIOLA. LIGHT TRADEWINDS AND FAIR WEATHER IS NOTED OVER THE REMAINDER OF THE CARIBBEAN SEA. IN THE UPPER LEVELS... WESTERLY ZONAL FLOW IS N OF 12N WITH STRONG SUBSIDENCE. SLY FLOW AND MOISTURE IS S OF 12N FROM NW VENEZUELA TO COSTA RICA. EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS. ATLANTIC OCEAN... A COLD FRONT IS OVER THE W ATLANTIC FROM E OF BERMUDA TO N FLORIDA ALONG 32N61W 28N70W 27N75W 29N81W. SCATTERED MODERATE CONVECTION IS FROM 27N-29N BETWEEN 64W-66W. SCATTERED SHOWERS ARE OVER THE REMAINDER OF THE FRONT. GALE CONDITIONS ARE JUST N OF THE AREA AHEAD OF THE FRONT. A 1024 MB HIGH IS OVER THE E ATLANTIC S OF THE AZORES NEAR 36N25W. THE TRADES ARE FAIRLY WEAK W OF 40W BUT HAVE PICKED UP IN THE FAR E ATLANTIC NEAR THE COAST OF AFRICA. IN THE UPPER LEVELS... A TROUGH IS OVER THE W ATLANTIC N OF 25N BETWEEN 60W-80W. A SHORT WAVE TROUGH IS OVER THE CENTRAL ATLANTIC NEAR 28N44W. ISOLATED MODERATE CONVECTION IS FROM 26N-32N BETWEEN 40W-43W. THE REMAINDER OF THE ATLANTIC N OF 13N HAS ZONAL WLY FLOW. A SMALL UPPER LEVEL HIGH IS OVER THE TROPICAL ATLANTIC NEAR 5N35W RIDGING W TO 5N50W. $$ FORMOSA