000 ABPZ20 KNHC 172334 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 PM PDT THU JUN 17 2010 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM BLAS LOCATED ABOUT 280 MILES SOUTH-SOUTHWEST OF MANZANILLO MEXICO. AN AREA OF SHOWERS AND THUNDERSTORMS CENTERED A FEW HUNDRED MILES SOUTH-SOUTHEAST OF THE GULF OF TEHUANTEPEC IS ASSOCIATED WITH A TROPICAL WAVE. DEVELOPMENT...IF ANY...IS EXPECTED TO BE SLOW TO OCCUR AS THE SYSTEM MOVES WEST-NORTHWESTWARD NEAR 10 MPH. THERE IS A LOW CHANCE...10 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. PUBLIC ADVISORIES ON TROPICAL STORM BLAS ARE ISSUED UNDER WMO HEADER WTPZ33 KNHC AND UNDER AWIPS HEADER MIATCPEP3. FORECAST/ADVISORIES ON BLAS ARE ISSUED UNDER WMO HEADER WTPZ23 KNHC AND UNDER AWIPS HEADER MIATCMEP3. $$ FORECASTER CANGIALOSI/PASCH