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TROPICAL STORM ISIS INTERMEDIATE ADVISORY NUMBER   3A
NATIONAL WEATHER SERVICE MIAMI FL
5 AM PDT WED SEP 02 1998

...TROPICAL STORM ISIS MOVING SLOWLY NORTHWARD TOWARD THE
   GULF OF CALIFORNIA...
 
TROPICAL STORM WARNINGS REMAIN IN EFFECT FOR BAJA CALIFORNIA SOUTH
OF A LINE FROM SANTA ROSALIA TO PUNTA ABREOJOS...AND FOR THE
MAINLAND COAST OF MEXICO FROM ELDORADO TO GUAYMAS.
 
AT 5 AM PDT...1200Z...THE CENTER OF TROPICAL STORM ISIS WAS
ESTIMATED FROM SATELLITE PICTURES TO BE CENTERED NEAR LATITUDE 23.1
NORTH...LONGITUDE 109.5 WEST OR CLOSE TO THE SOUTHERN TIP OF BAJA
CALIFORNIA.
 
ISIS IS MOVING TOWARD THE NORTH NEAR  6 MPH ... 9 KM/HR...AND THIS
MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS.
 
MAXIMUM SUSTAINED WINDS ARE NEAR  70 MPH...110 KM/HR...WITH HIGHER
GUSTS.  LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE DAY OR SO.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM
...MAINLY SOUTH OF THE CENTER.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS  990 MB...29.23 INCHES.
 
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 5 AM PDT POSITION...23.1 N...109.5 W.  MOVEMENT
TOWARD...NORTH NEAR  6 MPH.  MAXIMUM SUSTAINED WINDS... 70 MPH. 
MINIMUM CENTRAL PRESSURE... 990 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER
AT 8 AM PDT
 
RAPPAPORT
 
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