000 ABNT20 KNHC 011759 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT MON AUG 1 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... SHOWERS AND THUNDERSTORMS EXTEND FROM THE LESSER ANTILLES EASTWARD FOR A FEW HUNDRED MILES IN ASSOCIATION WITH A VIGOROUS TROPICAL WAVE. AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS CURRENTLY INVESTIGATING THE DISTURBANCE...ALTHOUGH SATELLITE IMAGERY INDICATES THIS SYSTEM HAS NOT BECOME ANY BETTER ORGANIZED SINCE THIS MORNING. THE WAVE IS PRODUCING WINDS TO NEAR TROPICAL STORM FORCE...AND ENVIRONMENTAL CONDITIONS REMAIN CONDUCIVE FOR A TROPICAL DEPRESSION OR A TROPICAL STORM TO FORM LATER TONIGHT OR TUESDAY. THIS SYSTEM HAS A HIGH CHANCE...80 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WEST-NORTHWESTWARD AT 15 TO 20 MPH. IF THE SYSTEM BECOMES A TROPICAL CYCLONE TONIGHT OR TOMORROW...TROPICAL STORM WARNINGS WOULD BE ISSUED FOR PORTIONS OF THE NORTHERN WINDWARD ISLANDS AND THE LEEWARD ISLANDS ON VERY SHORT NOTICE. INTERESTS IN THESE AREAS SHOULD CLOSELY MONITOR THE PROGRESS OF THIS DISTURBANCE. REGARDLESS OF DEVELOPMENT...THIS SYSTEM WILL BRING LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS TO PORTIONS OF THE LESSER ANTILLES TONIGHT AND TUESDAY. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER STEWART