000 ABNT20 KNHC 191732 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT SUN JUL 19 2009 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... SHOWER AND THUNDERSTORM ACTIVITY ASSOCIATED WITH A TROPICAL WAVE LOCATED ABOUT 600 MILES EAST OF THE WINDWARD ISLANDS HAS BECOME BETTER ORGANIZED OVER THE PAST SEVERAL HOURS. WHILE ENVIRONMENTAL CONDITIONS ARE CURRENTLY FAVORABLE FOR SOME DEVELOPMENT OF THIS SYSTEM...UPPER-LEVEL WINDS ARE EXPECTED TO BECOME LESS FAVORABLE TONIGHT. REGARDLESS OF DEVELOPMENT...LOCALLY HEAVY RAINFALL AND GUSTY WINDS COULD AFFECT THE WINDWARD ISLANDS ON MONDAY AS THE WAVE MOVES WESTWARD AT 15 TO 20 MPH. THERE IS A LOW CHANCE...LESS THAN 30 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BRENNAN/BLAKE