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.

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.

Millions of California residents were placed under a red flag warning through Thursday amid threats of further fires with looming winds in the forecast, according to multiple reports.

Since Jan. 8, one wave after another of fierce Santa Anas have blown through Southern California. Thus far, the San Diego area has escaped the devastation seen in the Los Angeles areas by wind-whipped blazes that leveled homes and forced evacuations.

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.

Scores of residents were urged to flee as fast-moving fires hurtled through bone-dry brush in Bonsall and Mission Valley Tuesday

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.