The warning was later extended to Los Mochis and another one was given out for part of the east coast of Baja California Sur . Forecasters then issued a hurricane warning from MazatlÃ n to Los Mochis . Shortly thereafter , the warning was extended to Los Mochis and issued for the eastern coast of Baja California Sur south of 25 Â N. Ten hours before Ismael made its final landfall , the Mexican government issued a hurricane warning from MazatlÃ n to Los Mochis .