000 ABNT20 KNHC 051148 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 800 AM EDT SUN JUN 5 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A LARGE LOW PRESSURE SYSTEM LOCATED ABOUT 150 MILES SOUTHWEST OF JAMAICA IS MOVING WESTWARD AT ABOUT 5 MPH. THUNDERSTORM ACTIVITY HAS INCREASED AND BECOME A LITTLE BETTER ORGANIZED...MAINLY TO THE EAST OF THE SURFACE CENTER. SOME GRADUAL DEVELOPMENT OF THIS SYSTEM IS POSSIBLE OVER THE NEXT FEW DAYS AS WINDS IN THE MIDDLE LEVELS OF THE ATMOSPHERE BECOME MORE FAVORABLE. THERE IS A MEDIUM CHANCE... 30 PERCENT...OF THIS DISTURBANCE BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. REGARDLESS OF DEVELOPMENT...HEAVY RAINS COULD CAUSE FLASH FLOODS AND MUD SLIDES OVER PORTIONS OF HAITI AND JAMAICA AS THE LOW MOVES SLOWLY TOWARD THE NORTHWEST OR NORTH OVER THE NEXT COUPLE OF DAYS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART