000 ABNT20 KNHC 191159 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 800 AM EDT FRI AUG 19 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL DEPRESSION EIGHT...LOCATED ABOUT 55 MILES NORTHWEST OF CABO GRACIAS ON THE HONDURAS-NICARAGUA BORDER. A LARGE TROPICAL WAVE LOCATED ABOUT 900 MILES EAST OF THE LESSER ANTILLES IS SHOWING SIGNS OF ORGANIZATION. ENVIRONMENTAL CONDITIONS ARE EXPECTED TO GRADUALLY BECOME MORE CONDUCIVE FOR DEVELOPMENT AS THE DISTURBANCE APPROACHES THE LESSER ANTILLES ON SATURDAY. THIS SYSTEM HAS A MEDIUM CHANCE...40 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WESTWARD AT 20 MPH. A BROAD LOW PRESSURE SYSTEM IS GRADUALLY BECOMING BETTER DEFINED ABOUT MIDWAY BETWEEN THE CAPE VERDE ISLANDS AND THE WEST COAST OF AFRICA. THE LOW IS PRODUCING A LARGE AREA OF THUNDERSTORMS...AND UPPER-LEVEL WINDS ARE FORECAST TO BE CONDUCIVE FOR DEVELOPMENT AS IT MOVES WEST TO WEST-NORTHWESTWARD AT 10 TO 15 MPH. THIS SYSTEM HAS A MEDIUM CHANCE...50 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. REGARDLESS OF DEVELOPMENT...LOCALLY HEAVY RAIN AND STRONG GUSTY WINDS ARE POSSIBLE IN THE CAPE VERDE ISLANDS TODAY THROUGH SATURDAY. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BEVEN/STEWART