000 ABNT20 KNHC 261155 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 800 AM EDT SUN AUG 26 2012 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM ISAAC...LOCATED ABOUT 135 MILES EAST-SOUTHEAST OF KEY WEST. SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A LARGE AREA OF LOW PRESSURE LOCATED ABOUT 650 MILES WEST OF THE CAPE VERDE ISLANDS HAVE CHANGED LITTLE IN ORGANIZATION DURING THE LAST SEVERAL HOURS. ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR DEVELOPMENT...AND THIS LOW COULD BECOME A TROPICAL DEPRESSION OVER THE NEXT DAY OR TWO. THIS SYSTEM HAS A MEDIUM CHANCE...50 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WEST-NORTHWESTWARD TO NORTHWESTWARD AT 10 TO 15 MPH. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER CANGIALOSI