000 ABNT20 KNHC 200541 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 AM EDT TUE SEP 20 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A LARGE LOW PRESSURE SYSTEM IS LOCATED ABOUT 1500 MILES EAST OF THE WINDWARD ISLANDS. THUNDERSTORM ACTIVITY IS GRADUALLY INCREASING AND BECOMING BETTER ORGANIZED...AND ENVIRONMENTAL CONDITIONS ARE EXPECTED TO REMAIN CONDUCIVE FOR A TROPICAL DEPRESSION TO FORM DURING THE NEXT COUPLE OF DAYS. THIS DISTURBANCE HAS A HIGH CHANCE...70 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WESTWARD AT 5 TO 10 MPH. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART