000 ABPZ20 KNHC 181148 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 500 AM PDT FRI MAY 18 2012 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL DEPRESSION ALETTA...LOCATED ABOUT 680 MILES SOUTH-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. SHOWER ACTIVITY ASSOCIATED WITH A LOW PRESSURE AREA CENTERED SEVERAL HUNDRED MILES SOUTH OF ACAPULCO MEXICO HAS CHANGED LITTLE IN ORGANIZATION DURING THE PAST SEVERAL HOURS. CONDITIONS APPEAR CONDUCIVE FOR SLOW DEVELOPMENT...AND THIS SYSTEM HAS A MEDIUM CHANCE...40 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BEVEN