000 ABPZ20 KNHC 132339 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 PM PDT TUE JUL 13 2010 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. AN ELONGATED TROUGH OF LOW PRESSURE LOCATED OFF THE SOUTHERN COAST OF MEXICO IS PRODUCING A LARGE BUT DISORGANIZED AREA OF SHOWERS AND THUNDERSTORMS. HOWEVER...THE SHOWER ACTIVITY HAS BECOME A LITTLE MORE CONCENTRATED A COUPLE HUNDRED MILES SOUTHWEST OF ACAPULCO DURING THE PAST FEW HOURS. ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR DEVELOPMENT OF THIS SYSTEM AS IT MOVES WEST-NORTHWESTWARD AT ABOUT 10 MPH. THERE IS A MEDIUM CHANCE...40 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 CANGIALOSI/STEWART