000 ABNT20 KNHC 200555 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 100 AM EST SUN NOV 20 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... SATELLITE IMAGERY AND SURFACE OBSERVATIONS FROM NEARBY SHIPS INDICATE THAT THE LOW PRESSURE SYSTEM LOCATED OVER THE CENTRAL ATLANTIC OCEAN ABOUT 650 MILES NORTHEAST OF THE LEEWARD ISLANDS HAS BECOME A LITTLE BETTER DEFINED. ALTHOUGH SHOWER AND THUNDERSTORM ACTIVITY REMAINS POORLY ORGANIZED...CONTINUED SLOW DEVELOPMENT OF THIS DISTURBANCE IS POSSIBLE DURING THE NEXT COUPLE OF DAYS AS IT MOVES SLOWLY NORTHWARD INTO A REGION OF MORE FAVORABLE UPPER-LEVEL WINDS. THIS SYSTEM HAS A MEDIUM CHANCE...40 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 STEWART