000 ABPZ20 KNHC 270552 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 1100 PM PDT WED SEP 26 2012 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM MIRIAM...LOCATED ABOUT 385 MILES WEST-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. SHOWER AND THUNDERSTORM ACTIVITY ASSOCIATED WITH A BROAD AREA OF LOW PRESSURE LOCATED ABOUT 375 MILES SOUTH-SOUTHWEST OF MANZANILLO MEXICO HAS INCREASED DURING THE PAST FEW HOURS. ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR SOME DEVELOPMENT OF THE LOW AS IT MOVES NORTH-NORTHWESTWARD AT 10 TO 15 MPH DURING THE NEXT COUPLE OF DAYS. THIS SYSTEM HAS A MEDIUM CHANCE...50 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS. LOCALLY HEAVY RAINS ARE POSSIBLE ALONG PORTIONS OF THE WEST COAST OF MEXICO DURING THE NEXT COUPLE OF DAYS. ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS. $$ FORECASTER BLAKE