000 ABNT20 KNHC 211510 TWOAT TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1130 AM EDT THU SEP 21 2006 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE HELENE...LOCATED ABOUT 505 MILES EAST-SOUTHEAST OF BERMUDA. SHOWER ACTIVITY ASSOCIATED WITH A LARGE TROPICAL WAVE AND A BROAD AREA OF LOW PRESSURE LOCATED 700 MILES WEST-SOUTHWEST OF THE CAPE VERDE ISLANDS HAS NOT BECOME ANY BETTER ORGANIZED SINCE YESTERDAY. HOWEVER...SOME GRADUAL DEVELOPMENT THIS SYSTEM IS POSSIBLE OVER THE NEXT FEW DAYS AS IT MOVES TOWARD THE WEST-NORTHWEST OR NORTHWEST AT AROUND 15 MPH. ELSEWHERE...TROPICAL STORM FORMATION IS NOT EXPECTED THROUGH FRIDAY. $$ FORECASTER AVILA