000 ABPZ20 KNHC 172331 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 500 PM PDT THU MAY 17 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 745 MILES SOUTH-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. THE LOW PRESSURE AREA CENTERED SEVERAL HUNDRED MILES SOUTH OF ACAPULCO MEXICO HAS BECOME A LITTLE BETTER DEFINED DURING THE DAY. 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 AS IT REMAINS NEARLY STATIONARY. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BLAKE