 By September 24, Tropical Storm Tina took a sharp turn north-northeast towards the west coast of Mexico, due to a combination of a weakness in a subtropical ridge and a mid-level to low-level trough passing north of the tropical cyclone.Shortly thereafter, an anticyclone developed west of the Baja California Coast.By September 27, steering flow moved Tina away from the coast of Mexico, where there was little wind shear.