000 ABPZ20 KNHC 192353 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 500 PM PDT FRI AUG 19 2011 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM GREG...LOCATED ABOUT 510 MILES WEST-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. A BROAD LOW PRESSURE SYSTEM LOCATED ABOUT 350 MILES SOUTH-SOUTHWEST OF ACAPULCO MEXICO IS PRODUCING AN EXTENSIVE AREA OF CLOUDINESS AND SHOWERS. SOME GRADUAL DEVELOPMENT OF THIS LARGE DISTURBANCE IS POSSIBLE OVER THE NEXT FEW DAYS AS IT MOVES TOWARD THE WEST- NORTHWEST AT ABOUT 15 MPH. THIS SYSTEM HAS A LOW CHANCE...20 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BLAKE