000 ABNT20 KNHC 172332 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 800 PM EDT THU JUN 17 2010 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A STRONG TROPICAL WAVE APPROACHING THE LEEWARD ISLANDS IS PRODUCING AN AREA OF SHOWERS AND THUNDERSTORMS. ALTHOUGH THE ASSOCIATED SHOWER AND THUNDERSTORM ACTIVITY HAS INCREASED THIS EVENING...IT REMAINS POORLY ORGANIZED DUE TO STRONG UPPER-LEVEL WINDS. DEVELOPMENT...IF ANY...IS EXPECTED TO BE SLOW TO OCCUR AS THIS SYSTEM MOVES WEST-NORTHWESTWARD AT ABOUT 15 MPH. THERE IS A LOW CHANCE...20 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. REGARDLESS OF DEVELOPMENT...LOCALLY HEAVY RAINS AND GUSTY WINDS ARE POSSIBLE OVER PORTIONS OF THE LEEWARD ISLANDS...THE VIRGIN ISLANDS...AND PUERTO RICO OVER THE NEXT DAY OR TWO. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER CANGIALOSI/PASCH