000 ABPZ20 KNHC 081157 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 AM PDT FRI AUG 8 2008 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM HERNAN...LOCATED ABOUT 800 MILES SOUTHWEST OF CABO SAN LUCAS MEXICO. A BROAD AREA OF LOW PRESSURE ASSOCIATED WITH A WELL-DEFINED TROPICAL WAVE HAS EMERGED OVER THE EXTREME EASTERN PACIFIC JUST WEST OF COSTA RICA. THIS SYSTEM IS PRODUCING A RELATIVELY CONCENTRATED AREA OF SHOWERS AND THUNDERSTORMS. CONDITIONS APPEAR FAVORABLE FOR DEVELOPMENT...AND THIS SYSTEM COULD BECOME A TROPICAL DEPRESSION WITHIN THE NEXT COUPLE OF DAYS AS IT MOVES WESTWARD AT 15 TO 20 MPH. ANOTHER BROAD AREA OF LOW PRESSURE LOCATED ABOUT 600 MILES SOUTH-SOUTHWEST OF MANZANILLO MEXICO IS PRODUCING A LARGE BUT DISORGANIZED AREA OF CLOUDINESS...SHOWERS...AND THUNDERSTORMS. SLOW DEVELOPMENT OF THIS SYSTEM IS POSSIBLE DURING THE NEXT COUPLE OF DAYS AS IT MOVES WESTWARD AT ABOUT 15 MPH. AN AREA OF LOW PRESSURE IS LOCATED ABOUT 1250 MILES EAST-SOUTHEAST OF THE HAWAIIAN ISLANDS. WHILE THIS SYSTEM IS CURRENTLY PRODUCING ONLY LIMITED AND DISORGANIZED SHOWER ACTIVITY...SLOW DEVELOPMENT IS POSSIBLE DURING THE NEXT COUPLE OF DAYS AS IT MOVES SLOWLY WEST-NORTHWESTWARD AT ABOUT 10 MPH. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER KNABB