000 WTPZ31 KNHC 151445 TCPEP1 BULLETIN TROPICAL STORM IRWIN ADVISORY NUMBER 38 NWS NATIONAL HURRICANE CENTER MIAMI FL EP112011 800 AM PDT SAT OCT 15 2011 ...IRWIN MOVING SOUTHWARD....NO CHANGE IN STRENGTH... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...16.5N 106.6W ABOUT 230 MI...370 KM SW OF MANZANILLO MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...S OR 185 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 AM PDT...1500 UTC...THE CENTER OF TROPICAL STORM IRWIN WAS LOCATED NEAR LATITUDE 16.5 NORTH...LONGITUDE 106.6 WEST. IRWIN IS MOVING TOWARD THE SOUTH NEAR 7 MPH...11 KM/H. A TURN TO THE SOUTH-SOUTHWEST IS EXPECTED LATER TODAY...FOLLOWED BY A SLOWER SOUTHWESTWARD TO WEST-SOUTHWESTWARD MOTION ON SUNDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH...65 KM/H...WITH HIGHER GUSTS. IRWIN IS FORECAST TO WEAKEN TO TROPICAL DEPRESSION DURING THE NEXT DAY OR SO. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 45 MILES...75 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1005 MB...29.68 INCHES. HAZARDS AFFECTING LAND ---------------------- NONE NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...200 PM PDT. $$ FORECASTER BROWN