000 ABNT20 KNHC 201738 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 100 PM EST SUN NOV 20 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THERE HAS BEEN LITTLE CHANGE IN THE ORGANIZATION OF SHOWER AND THUNDERSTORM ACTIVITY ASSOCIATED WITH A LOW PRESSURE SYSTEM LOCATED ABOUT 600 MILES NORTHEAST OF THE NORTHEASTERN LEEWARD ISLANDS DURING THE PAST SEVERAL HOURS. ENVIRONMENTAL CONDITIONS APPEAR MARGINALLY CONDUCIVE FOR THE DEVELOPMENT OF THIS DISTURBANCE DURING THE NEXT DAY OR SO AS IT MOVES SLOWLY NORTHWARD. THIS SYSTEM HAS A MEDIUM CHANCE...50 PERCENT...OF BECOMING A SUBTROPICAL OR TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER KIMBERLAIN