000 ABNT20 KNHC 242331 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 800 PM EDT MON AUG 24 2009 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... SHOWERS AND THUNDERSTORMS REMAIN DISORGANIZED IN ASSOCIATION WITH A TROPICAL WAVE INTERACTING WITH AN UPPER-LEVEL LOW ABOUT 300 MILES EAST-NORTHEAST OF THE LEEWARD ISLAND. UPPER-LEVEL WINDS MAY BECOME MORE FAVORABLE FOR SLOW DEVELOPMENT OF THIS SYSTEM OVER THE NEXT COUPLE OF DAYS AS IT MOVES TOWARD THE WEST-NORTHWEST AT AROUND 25 MPH. THERE IS A MEDIUM CHANCE...30 TO 50 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. A BROAD AREA OF LOW PRESSURE LOCATED OVER THE SOUTHWESTERN CARIBBEAN SEA IS PRODUCING SCATTERED SHOWER AND THUNDERSTORM ACTIVITY. ANY FURTHER DEVELOPMENT OF THIS SYSTEM SHOULD BE SLOW TO OCCUR DUE TO PROXIMITY TO LAND. REGARDLESS OF DEVELOPMENT...HEAVY RAINFALL IS POSSIBLE OVER NICARAGUA...COSTA RICA...AND PANAMA TONIGHT AND TUESDAY AS THE LOW MOVES WESTWARD AT 20 TO 25 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