000 ABPZ20 KNHC 191149 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 AM PDT SAT SEP 19 2009 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON RECENTLY-DOWNGRADED TROPICAL DEPRESSION MARTY...LOCATED ABOUT 445 MILES WEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. A SMALL AREA OF LOW PRESSURE LOCATED ABOUT 150 MILES SOUTH-SOUTHEAST OF THE SOUTHERN TIP OF BAJA CALIFORNIA CONTINUES TO PRODUCE SHOWER AND THUNDERSTORM ACTIVITY AS IT MOVES NORTHWESTWARD AT AROUND 10 MPH. A TROPICAL DEPRESSION COULD FORM DURING NEXT DAY OR SO BEFORE UPPER-LEVEL WINDS BECOME LESS FAVORABLE FOR DEVELOPMENT. 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