The natives called the Viento De Fuego - Firewind. South of Arroyo Grande They were known as Santana...Diablo...or, most commonly, the Santa Ana. Whatever you called them, they blew incessantly, moaning through the canyons, gusting across the plains. Mix them with the ions in the air and they caused, for some unfortunates, migraines. You are one of the unfortunates.