000 ABNT20 KNHC 051734 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT SUN JUN 5 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THUNDERSTORM ACTIVITY HAS BECOME A LITTLE BETTER ORGANIZED IN ASSOCIATION WITH A BROAD LOW PRESSURE SYSTEM LOCATED ABOUT 150 MILES SOUTHWEST OF JAMAICA. ALTHOUGH SURFACE PRESSURES ARE ONLY SLOWLY DECREASING...SOME GRADUAL DEVELOPMENT OF THIS LARGE DISTURBANCE IS POSSIBLE OVER THE NEXT COUPLE OF DAYS AS WINDS IN THE MIDDLE LEVELS OF THE ATMOSPHERE BRIEFLY BECOME SOMEWHAT FAVORABLE. THERE IS A MEDIUM CHANCE...40 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS SCHEDULED TO INVESTIGATE THE LOW PRESSURE AREA MONDAY AFTERNOON...IF NECESSARY. REGARDLESS OF DEVELOPMENT...HEAVY RAINS COULD CAUSE FLASH FLOODS AND MUD SLIDES OVER PORTIONS OF HAITI AND JAMAICA AS THE SYSTEM MOVES SLOWLY TOWARD THE NORTHWEST OR NORTH OVER THE NEXT FEW DAYS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART