000 AXNT20 KNHC 260601 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 205 AM EDT THU APR 26 2007 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...METEOROLOGICAL ANALYSIS... WEATHER OBSERVATIONS...AND RADAR. BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0515 UTC. ...ITCZ... ITCZ AXIS IS CENTERED ALONG 7N10W 2N30W 1N40W CROSSING THE EQUATOR AT 44W THEN INTO NE BRAZIL NEAR 2S50W. CLUSTERS OF SCATTERED MODERATE TO STRONG CONVECTION ARE FROM 2N-6N BETWEEN 11W-21W. ISOLATED MODERATE CONVECTION IS FROM 3N-4N BETWEEN 25W-30W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 1N-4N BETWEEN 48W-53W. ...DISCUSSION... GULF OF MEXICO... A SLOW MOVING COLD FRONT HAS ENTERED THE NW GULF OF MEXICO FROM 30N95W TO 24N98W. ISOLATED SHOWERS ARE WITHIN 30 NM OF THE FRONT. A PREFRONTAL SQUALL LINE IS OVER SE LOUISIANA AND THE N GULF OF MEXICO ALONG 31N91W 28N94W MOVING SLOWLY E. WIDELY SCATTERED MODERATE CONVECTION IS FROM 29N-31N BETWEEN 90W-92W. HIGH PRESSURE RETURN FLOW IS NOTED OVER THE REMAINDER OF THE GULF OF MEXICO...E OF THE SQUALL LINE...PRODUCING 10-15 KT SELY FLOW AND FAIR WEATHER. IN THE UPPER LEVELS... A SHARP TROUGH IS OVER THE W GULF OF MEXICO WITH AXIS ALONG 94W MOVING E. STRONG SUBSIDENCE IS OVER THE GULF OF MEXICO W OF 88W. A RIDGE IS OVER THE E GULF OF MEXICO E OF 90W. A BAND OF UPPER LEVEL MOISTURE IS OVER THE E GULF E OF 88W. EXPECT AN UPPER LEVEL RIDGE TO ADVECT OVER THE W GULF OF MEXICO AND BE W OF 90W WITHIN 24 HOURS. ALSO EXPECT THE SURFACE COLD FRONT TO EXTEND FROM N FLORIDA TO THE YUCATAN PENINSULA WITH CONVECTION WITHIN 24 HOURS. CARIBBEAN... THE TAIL END OF A STATIONARY FRONT IS JUST N OF THE LEEWARD ISLANDS FROM 19N67W TO 20N60W. SCATTERED SHOWERS ARE N OF 18N AND E OF 72W TO INCLUDE THE HIGHER ELEVATIONS OF HISPANIOLA AND PUERTO RICO. THE REMAINDER OF THE CARIBBEAN SEA HAS 15-25 KT EASTERLY TRADEWINDS. SCATTERED SHOWERS ARE NOTED OVER THE SW CARIBBEAN AND CENTRAL AMERICA FROM E PANAMA TO E HONDURAS BETWEEN 77W-86W. IN THE UPPER LEVELS...A RIDGE IS OVER THE NW CARIBBEAN SEA N OF 15N AND W OF 70W. UPPER LEVEL WLY ZONAL FLOW COVERS THE REMAINDER OF THE SEA. EXPECT MORE SCATTERED SHOWERS OVER THE SW CARIBBEAN AND CENTRAL AMERICA DURING THE NEXT 24 HOURS. ATLANTIC... A 1025 MB HIGH IS OVER THE W ATLANTIC NEAR 31N64W. A RIDGE AXIS EXTENDS SW TO CENTRAL CUBA. A STATIONARY FRONT IS OVER THE CENTRAL ATLANTIC ALONG 32N39W 26N50W 20N60W. SCATTERED SHOWERS ARE WITHIN 60 NM OF THE FRONT. A 1029 MB HIGH IS OVER THE AZORES ISLANDS NEAR 37N24W. A RIDGE AXIS EXTENDS SW TO 28N33W. IN THE UPPER LEVELS... A RIDGE IS OVER THE W ATLANTIC N OF 20N AND W OF 70W. A TROUGH IS OVER THE CENTRAL ATLANTIC N OF 20N BETWEEN 60W-70W. A BROAD RIDGE IS OVER THE E ATLANTIC N OF 20N E OF 60W. A SMALL UPPER LEVEL LOW IS CENTERED OVER THE TROPICAL ATLANTIC NEAR 12N35W. $$ FORMOSA