 Once back over water , Brenda began to intensify , attaining hurricane status late on August 20 . The next day , a well @-@ defined eye had developed and the storm attained its peak intensity as a high @-@ end Category 1 hurricane with winds of 90 mph ( 150 km / h ) and a minimum pressure of 977 mbar ( hPa ; 28 @.@ 85 inHg ) . The storm made landfall later that day near Ciudad del Carmen , Mexico at this intensity , becoming the first hurricane on record to strike the region . After moving inland , Brenda rapidly weakened to a depression by the morning of August 22 and dissipated later that day . 
