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ZCZC MIATWOAT ALL TTAA00 KNHC DDHHMM TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT SUN SEP 12 2010 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE IGOR...LOCATED ABOUT 1145 MILES EAST OF THE NORTHERN LEEWARD ISLANDS...AND ON NEWLY FORMED TROPICAL DEPRESSION TWELVE...LOCATED ABOUT 190 MILES SOUTHEAST OF THE SOUTHERNMOST CAPE VERDE ISLANDS. 1. SHOWERS AND THUNDERSTORMS REMAIN DISORGANIZED IN ASSOCIATION WITH A BROAD AREA OF LOW PRESSURE LOCATED OVER THE CENTRAL CARIBBEAN SEA...SOUTH OF HISPANIOLA. ENVIRONMENTAL CONDITIONS STILL APPEAR FAVORABLE FOR GRADUAL DEVELOPMENT OF THIS SYSTEM...AND A TROPICAL DEPRESSION COULD FORM DURING THE NEXT COUPLE OF DAYS AS IT MOVES WESTWARD AT 10 TO 15 MPH. THERE IS A MEDIUM CHANCE...50 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. REGARDLESS OF DEVELOPMENT...LOCALLY HEAVY RAINFALL IS POSSIBLE IN THE VIRGIN ISLANDS...PUERTO RICO...HISPANIOLA... JAMAICA AND CUBA DURING THE NEXT DAY OR TWO. THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES...ESPECIALLY IN MOUNTAINOUS TERRAIN. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. PUBLIC ADVISORIES ON TROPICAL DEPRESSION TWELVE ARE ISSUED UNDER WMO HEADER WTNT32 KNHC AND UNDER AWIPS HEADER MIATCPAT2. FORECAST/ADVISORIES ARE ISSUED UNDER WMO HEADER WTNT22 KNHC AND UNDER AWIPS HEADER MIATCMAT2. $$ FORECASTER BRENNAN NNNN
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