000 ABNT20 KNHC 272109 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 530 PM EDT THU JUL 27 2006 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A VIGOROUS TROPICAL WAVE IS PRODUCING A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER THE SOUTHEASTERN BAHAMAS...TURKS AND CAICOS ISLANDS...HISPANIOLA...PUERTO RICO...AND ADJACENT WATERS OF THE ATLANTIC AND CARIBBEAN SEA. ALTHOUGH UPPER-LEVEL WINDS ARE UNFAVORABLE FOR TROPICAL CYCLONE FORMATION...LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS WILL BE POSSIBLE IN BRIEF SQUALLS AS THE SYSTEM MOVES WEST-NORTHWESTWARD AT 20 TO 25 MPH. A WESTWARD-MOVING TROPICAL WAVE...ACCOMPANIED BY A SURFACE LOW PRESSURE SYSTEM...IS SHOWING SIGNS OF ORGANIZATION ABOUT 550 MILES SOUTHWEST OF THE CAPE VERDE ISLANDS. HOWEVER...ANY FURTHER DEVELOPMENT IS EXPECTED TO BE SLOW DUE TO ONLY MARGINALLY FAVORABLE UPPER-LEVEL WINDS. ELSEWHERE...TROPICAL STORM FORMATION IS NOT EXPECTED THROUGH FRIDAY. $$ FORECASTER LANDSEA/STEWART