000 ABNT20 KNHC 061745 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT TUE SEP 6 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE KATIA...LOCATED ABOUT 365 MILES SOUTH-SOUTHWEST OF BERMUDA. SATELLITE IMAGES INDICATE THAT A TROPICAL DEPRESSION COULD BE FORMING ABOUT 725 MILES WEST-SOUTHWEST OF THE CAPE VERDE ISLANDS... AND IF THIS TREND CONTINUES...ADVISORIES WILL BE INITIATED LATER TODAY. THIS SYSTEM IS EXPECTED TO MOVE TOWARD THE WEST OR WEST-NORTHWEST AT ABOUT 15 MPH AND HAS A HIGH CHANCE...90 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. A LARGE AREA OF DISTURBED WEATHER OVER THE SOUTHERN GULF OF MEXICO IS BEGINNING TO SHOW SOME SIGNS OF ORGANIZATION...BUT ANY ADDITIONAL DEVELOPMENT IS ANTICIPATED TO BE SLOW. AN AIR FORCE PLANE IS SCHEDULED TO INVESTIGATE THIS AREA ON WEDNESDAY...IF NECESSARY. THIS SYSTEM HAS A MEDIUM CHANCE...30 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. A TROPICAL WAVE LOCATED ABOUT 500 MILES EAST OF THE LEEWARD ISLANDS IS EXPECTED TO MOVE WESTWARD AND BRING CLOUDINESS AND SHOWERS OVER THESE ISLANDS DURING THE NEXT DAY OR SO. UPPER-LEVEL WINDS ARE NOT FAVORABLE FOR SIGNIFICANT DEVELOPMENT...AND THIS SYSTEM HAS A LOW CHANCE...10 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER AVILA