000 WTPZ34 KNHC 220554 TCPEP4 BULLETIN HURRICANE DORA INTERMEDIATE ADVISORY NUMBER 15A NWS NATIONAL HURRICANE CENTER MIAMI FL EP042011 1100 PM PDT THU JUL 21 2011 ...HURRICANE DORA WEAKENING AS IT MOVES PARALLEL TO THE SOUTHWESTERN COAST OF MEXICO... SUMMARY OF 200 AM PDT...0600 UTC...INFORMATION ----------------------------------------------- LOCATION...18.5N 108.2W ABOUT 210 MI...340 KM SW OF CABO CORRIENTES MEXICO ABOUT 320 MI...515 KM SSE OF CABO SAN LUCAS MEXICO MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...953 MB...28.14 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * MEXICO FROM AGUA BLANCA TO BUENAVISTA INCLUDING CABO SAN LUCAS A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 1100 PM PDT...0600 UTC...THE CENTER OF HURRICANE DORA WAS LOCATED NEAR LATITUDE 18.5 NORTH...LONGITUDE 108.2 WEST. DORA IS MOVING TOWARD THE NORTHWEST NEAR 9 MPH...15 KM/H...AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 48 HOURS. ON THE FORECAST TRACK...THE CENTER OF DORA IS EXPECTED TO REMAIN OFFSHORE OF THE SOUTHERN BAJA CALIFORNIA PENINSULA...BUT TROPICAL STORM CONDITIONS COULD REACH PORTIONS OF THE TROPICAL STORM WARNING AREA BY FRIDAY NIGHT. MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 120 MPH...195 KM/H...WITH HIGHER GUSTS. DORA IS A CATEGORY THREE HURRICANE ON THE SAFFIR-SIMPSON SCALE. CONTINUED WEAKENING IS FORECAST THROUGH TONIGHT...WITH A MORE RAPID DECREASE IN WINDS EXPECTED ON FRIDAY. HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 50 MILES...85 KM...FROM THE CENTER...AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 150 MILES...240 KM. ESTIMATED MINIMUM CENTRAL PRESSURE IS 953 MB...28.14 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL-STORM-FORCE WINDS ARE POSSIBLE OVER PORTIONS OF THE WARNING AREA BY FRIDAY NIGHT. SURF...LARGE SWELLS GENERATED BY DORA WILL AFFECT THE COAST OF SOUTHWESTERN MEXICO DURING THE NEXT COUPLE OF DAYS. SWELLS WILL BEGIN AFFECTING THE COAST OF THE SOUTHERN PORTION OF BAJA CALIFORNIA LATER TONIGHT. THESE SWELLS WILL LIKELY CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...200 AM PDT. $$ FORECASTER LANDSEA/STEWART