Tropical Depression Twenty-Three formed from a disturbance on October 7. In a favorable environment over warm waters, It rapidly intensified, reaching tropical storm intensity the same day it formed. Tropical Storm Waldo then began to turn to the north and while located south of Baja California Sur, Waldo was upgraded into a Category 1 hurricane. A trough started re-curving Waldo towards the Mexican coast. Shortly after peaking as a Category 2 hurricane, Waldo made landfall southwest of Culiacán. Waldo rapidly dissipated over land and eventually merged with a cold front.