000 ABPZ20 KNHC 190540 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1100 PM PDT SAT SEP 18 2010 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. A LARGE AREA OF SHOWERS AND THUNDERSTORMS IS ASSOCIATED WITH A BROAD AREA OF LOW PRESSURE CENTERED A COUPLE HUNDRED MILES SOUTH OF MANZANILLO MEXICO. ENVIRONMENTAL CONDITIONS APPEAR MARGINALLY FAVORABLE FOR SOME DEVELOPMENT DURING THE NEXT DAY OR TWO...AND THERE IS A MEDIUM CHANCE...30 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES SLOWLY WEST-NORTHWESTWARD. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER LANDSEA/BRENNAN