000 ABNT20 KNHC 210532 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 AM EDT WED SEP 21 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON NEWLY FORMED TROPICAL STORM OPHELIA LOCATED ABOUT 1585 MILES EAST-SOUTHEAST OF THE NORTHERN LEEWARD ISLANDS. A SMALL AREA OF LOW PRESSURE LOCATED ABOUT 225 MILES EAST OF THE NORTHERN LEEWARD ISLANDS IS PRODUCING DISORGANIZED SHOWER AND THUNDERSTORM ACTIVITY. UPPER-LEVEL WINDS ARE NOT FAVORABLE FOR DEVELOPMENT OF THIS SYSTEM...HOWEVER THIS LOW COULD BRING A BRIEF PERIOD OF RAINFALL AND GUSTY WINDS TO PORTIONS OF THE NORTHERN LEEWARD ISLANDS TODAY AS IT MOVES WESTWARD AT 15 TO 20 MPH. THIS SYSTEM HAS A LOW CHANCE...NEAR 0 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. PUBLIC ADVISORIES ON OPHELIA ARE ISSUED UNDER WMO HEADER WTNT31 KNHC AND UNDER AWIPS HEADER MIATCPAT1. FORECAST/ADVISORIES ON OPHELIA ARE ISSUED UNDER WMO HEADER WTNT21 KNHC AND UNDER AWIPS HEADER MIATCMAT1. $$ FORECASTER BROWN