Santa Ana Winds Return to California Bringing Wildfire Danger
The Santa Ana winds have returned to California, a signal to the state’s residents that the wildfire season has begun in earnest.
The winds are created by high pressure over Nevada’s Great Basin as cool weather starts to arrive in the Fall. Low pressure systems in warmer California pull them along, and as they flow through the Sierra Nevadas and other ranges, twisting their way through narrow passes and canyons, they heat up, lose moisture and gain speed.