000 ABPZ20 KNHC 142331 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 PM PDT MON SEP 14 2009 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. A BROAD AREA OF LOW PRESSURE LOCATED ABOUT 300 MILES SOUTHWEST OF MANZANILLO MEXICO CONTINUES TO PRODUCE A LARGE AREA OF SHOWERS AND THUNDERSTORMS. ALTHOUGH THERE ARE NO SIGNS OF A WELL-DEFINED SURFACE CIRCULATION AT THIS TIME...ENVIRONMENTAL CONDITIONS ARE FAVORABLE FOR DEVELOPMENT...AND A TROPICAL DEPRESSION COULD FORM AS THIS SYSTEM MOVES SLOWLY WEST-NORTHWESTWARD DURING THE NEXT DAY OR TWO. THERE IS A HIGH CHANCE...GREATER THAN 50 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BRENNAN