ZCZC MIATCPEP5 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM ISIS ADVISORY NUMBER 1 NATIONAL WEATHER SERVICE MIAMI FL 2 PM PDT TUE SEP 01 1998 ...TROPICAL STORM ISIS FORMS JUST SOUTH OF BAJA CALIFORNIA... AT 2 PM PDT...2100Z...THE GOVERNMENT OF MEXICO HAS ISSUED A TROPICAL STORM WARNING FOR THE SOUTHERN BAJA CALIFORNIA PENINSULA...SOUTH OF A LINE FROM PUERTO CORTEZ ON THE WEST COAST TO DOLORES ON THE EAST COAST...ROUGHLY ALONG LATITUDE 25N. AT 2 PM PDT THE CENTER OF TROPICAL STORM ISIS WAS LOCATED NEAR LATITUDE 20.2 NORTH...LONGITUDE 109.5 WEST OR ABOUT 190 MILES...300 KM...SOUTH OF CABO SAN LUCAS ON THE SOUTHERN TIP OF BAJA CALIFORNIA. ISIS IS MOVING TOWARD THE NORTH NEAR 9 MPH...15 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE INTO WEDNESDAY. ON THIS TRACK... TROPICAL STORM FORCE WINDS AND LOCALLY HEAVY RAIN WILL SOON BEGIN SPREADING OVER THE WARNING AREA. MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH... 85 KM/HR...WITH HIGHER GUSTS. A SHIP REPORTED WINDS OF ABOUT 45 MPH WELL SOUTH OF THE CENTER AT 11 AM PDT...1800Z. SOME STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES...370 KM...MAINLY SOUTH OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 995 MB...29.38 INCHES. A SECOND SHIP...NEARER TO THE CENTER...REPORTED A PRESSURE OF 997 MB AT 11 AM PDT. RAINFALL TOTALS OF 5 TO 10 INCHES ARE POSSIBLE IN THE WARNING AREA AND PORTIONS OF MAINLAND MEXICO TO THE EAST AND SOUTHEAST...AND COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUDSLIDES. REPEATING THE 2 PM PDT POSITION...20.2 N...109.5 W. MOVEMENT TOWARD...NORTH NEAR 9 MPH. MAXIMUM SUSTAINED WINDS... 50 MPH. MINIMUM CENTRAL PRESSURE... 995 MB. AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 5 PM PDT FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 8 PM PDT. RAPPAPORT NNNN