000 ABNT20 KNHC 311735 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT SUN JUL 31 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... A LARGE AND ELONGATED LOW PRESSURE SYSTEM IS LOCATED ABOUT 575 MILES EAST OF THE NORTHERN WINDWARD ISLANDS. ALTHOUGH THIS SYSTEM HAS CHANGED LITTLE IN ORGANIZATION TODAY...ENVIRONMENTAL CONDITIONS ARE EXPECTED TO REMAIN CONDUCIVE FOR A TROPICAL DEPRESSION TO FORM LATER TODAY OR ON MONDAY. THIS SYSTEM HAS A HIGH CHANCE...NEAR 100 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WEST-NORTHWESTWARD NEAR 15 MPH. AN AIR FORCE RESERVE UNIT RECONNAISSANCE AIRCRAFT IS EN ROUTE TO DETERMINE IF THIS BROAD DISTURBANCE HAS DEVELOPED A WELL-DEFINED SURFACE CIRCULATION CENTER. IF THE LOW BECOMES A TROPICAL CYCLONE LATER TODAY... TROPICAL STORM WATCHES OR WARNINGS WOULD LIKELY BE REQUIRED FOR PORTIONS OF THE NORTHERN WINDWARD ISLANDS AND THE LEEWARD ISLANDS. INTERESTS IN THESE AREAS SHOULD CLOSELY MONITOR THE PROGRESS OF THIS DEVELOPING SYSTEM. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART