000 ABNT20 KNHC 131745 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT MON SEP 13 2010 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE IGOR...LOCATED ABOUT 880 MILES EAST OF THE NORTHERN LEEWARD ISLANDS ...AND ON TROPICAL STORM JULIA...LOCATED ABOUT 155 MILES WEST OF THE SOUTHERNMOST CAPE VERDE ISLANDS. SHOWERS AND THUNDERSTORMS REMAIN POORLY ORGANIZED IN ASSOCIATION WITH A BROAD AREA OF LOW PRESSURE OVER THE WEST-CENTRAL CARIBBEAN SEA. SOME DEVELOPMENT OF THIS SYSTEM IS POSSIBLE AT IT MOVES WEST-NORTHWESTWARD AROUND 20 MPH...AND THERE IS A MEDIUM CHANCE... 40 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. REGARDLESS OF DEVELOPMENT...LOCALLY HEAVY RAINFALL IS POSSIBLE OVER PORTIONS OF HISPANIOLA...JAMAICA...CUBA...THE CAYMAN ISLANDS...AND THE YUCATAN PENINSULA DURING THE NEXT DAY OR TWO. THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES...ESPECIALLY IN AREAS OF MOUNTAINOUS TERRAIN. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BRENNAN