Strong winds fueled fires across Santa Ana in California. Dramatic footage shows a plume of smoke rising from a hillside, with strong winds swaying trees in the foreground on3. Reports indicated the large vegetation fire started Thursday afternoon on a hilltop near the US-Mexico border.

The last time it was this dry in January, there were barely more than 500 people in San Diego. The year was 1850, and only a quarter-inch of rain had fallen in six months. It made the region ripe for wildfire — but that wasn’t much of a concern. The city’s population was clustered along the coast, far from the backcountry, where most fires burned.

A critical fire threat will continue across County as Santa Ana winds and dry conditions persist through early Friday, according to the National Weather Service.

Much of inland San Diego County was whipped yet again by a strong Santa Ana wind event Monday into Tuesday, contributing to risky fire conditions as the region remains bone-dry.

Santa Ana winds finally delivered a big, direct hit on San Diego County Tuesday, gusting as high as 102 mph in the backcountry where a touch of long-overdue rain could arrive this weekend.

An uptick in Santa Ana winds Wednesday afternoon through Thursday, combined with critically dry vegetation and low humidity, will result in elevated to locally critical fire weather conditions in County through late Thursday.

Jan. 24 A new wildfire was reported today at 6:52 a.m. in San Diego County. The wildfire has been burning on private land. Currently, there are no details on the containment or cause of the fire.

Another blast of Santa Ana winds Thursday prompted San Diego Gas & Electric to cut off electricity to thousands of residents in another of a wave of power outages that have continued off and on for two weeks.