000 ABNT20 KNHC 051747 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT TUE OCT 5 2010 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A WELL-DEFINED LOW PRESSURE SYSTEM CENTERED ABOUT 140 MILES NORTH OF SAN JUAN PUERTO RICO IS PRODUCING A LARGE BAND OF CLOUDINESS AND THUNDERSTORMS OVER THE NORTHEASTERN CARIBBEAN SEA...PUERTO RICO... THE VIRGIN ISLANDS...AND THE LEEWARD ISLANDS...AND EXTENDING NORTHWARD OVER THE ATLANTIC OCEAN FOR SEVERAL HUNDRED MILES. UPPER-LEVEL WINDS ARE GRADUALLY BECOMING MORE CONDUCIVE FOR DEVELOPMENT...AND THIS SYSTEM COULD BECOME A SUBTROPICAL OR TROPICAL DEPRESSION DURING THE NEXT DAY OR SO. THERE IS A HIGH CHANCE...80 PERCENT...OF THIS SYSTEM BECOMING A SUBTROPICAL OR TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES GENERALLY NORTHWESTWARD AT 5 TO 10 MPH. LOCALLY HEAVY RAINS AND GUSTY WINDS WILL BE POSSIBLE OVER THE LEEWARD ISLANDS...THE VIRGIN ISLANDS... AND PUERTO RICO DURING THE NEXT DAY OR TWO. A LARGE AREA OF DISORGANIZED SHOWERS AND THUNDERSTORMS LOCATED ABOUT 900 MILES EAST OF THE LESSER ANTILLES IS ASSOCIATED WITH A WEAK SURFACE TROUGH INTERACTING WITH AN UPPER-LEVEL LOW. THIS DISTURBANCE IS SHOWING NO SIGNS OF ORGANIZATION...AND THERE IS A LOW CHANCE... NEAR 0 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES NORTH-NORTHWESTWARD AT 5 TO 10 MPH. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART