000 WTPZ34 KNHC 031153 TCPEP4 BULLETIN TROPICAL STORM NORBERT INTERMEDIATE ADVISORY NUMBER 4A NWS NATIONAL HURRICANE CENTER MIAMI FL EP142014 500 AM PDT WED SEP 03 2014 ...NORBERT TURNS WEST-NORTHWESTWARD... SUMMARY OF 500 AM PDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...19.7N 108.3W ABOUT 245 MI...395 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * LA PAZ TO SANTA FE MEXICO A TROPICAL STORM WATCH IS IN EFFECT FOR... * NORTH OF SANTA FE NORTHWARD TO CABO SAN LAZARO MEXICO A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. A HURRICANE WATCH COULD BE REQUIRED FOR PORTIONS OF THE SOUTHERN BAJA CALIFORNIA PENINSULA LATER THIS MORNING. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 500 AM PDT...1200 UTC...THE CENTER OF TROPICAL STORM NORBERT WAS LOCATED NEAR LATITUDE 19.7 NORTH...LONGITUDE 108.3 WEST. NORBERT IS MOVING TOWARD THE WEST-NORTHWEST NEAR 8 MPH...13 KM/H...AND THIS GENERAL MOTION SHOULD CONTINUE TODAY... WITH A TURN TOWARD THE NORTHWEST EXPECTED ON THURSDAY. ON THE FORECAST TRACK...THE CENTER OF NORBERT IS EXPECTED TO APPROACH THE SOUTHERN TIP OF THE BAJA CALIFORNIA PENINSULA ON THURSDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 60 MPH...95 KM/H...WITH HIGHER GUSTS. STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...AND NORBERT IS EXPECTED TO REACH HURRICANE STRENGTH BY THURSDAY. TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 60 MILES...95 KM FROM THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 999 MB...29.50 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA BY THURSDAY AFTERNOON. TROPICAL STORM CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA BY THURSDAY NIGHT. RAINFALL...NORBERT IS EXPECTED TO PRODUCE RAINFALL AMOUNTS OF 2 TO 4 INCHES OVER COLIMA AND WESTERN PARTS OF MICHOACAN AND JALISCO IN SOUTHWESTERN MEXICO THROUGH WEDNESDAY. SURF...LARGE SWELLS WILL AFFECT PORTIONS OF THE SOUTHWESTERN COAST OF MEXICO TODAY AND THURSDAY...AND PRODUCE DANGEROUS SURF CONDITIONS AND RIP CURRENTS. LARGE SWELLS WILL GRADUALLY SPREAD NORTHWARD INTO THE SOUTHERN GULF OF CALIFORNIA AND AFFECT THE SOUTHERN PORTIONS OF BAJA CALIFORNIA SUR BY THURSDAY. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...800 AM PDT. $$ FORECASTER BLAKE