A wind-blasted wildfire tore through Los Angeles' northern foothills early Saturday, sending thousands of residents fleeing in the dark, forcing a hospital to evacuate and destroying an untold number of homes. The fire broke out late Friday in the foothill community of Sylmar on the edge of the Angeles National Forest and quickly spread across 2,600 acres 1,050 hectares - more than 10.4 square kilometers - as it was driven by Santa Ana wind gusting as high as 122 kph. Dozens of homes were destroyed, officials said, and aerial footage from television helicopters showed rows of houses gutted in just in one subdivision. Fire crews had to abandon a mobile home park that was burning out of control. The park had 600 spaces for homes.