SAN DIEGO — Cal Fire crews are battling a multi-acre brush fire that broke out near the Lower Otay Lake Sunday afternoon.

The fire, called the “Border 34” fire, was stopped at 24 acres, according to officials. As of 8:30 p.m., it was 60% contained.

The fire, which broke out around 3:30 p.m., had a moderate rate of spread with the potential to reach 75 acres, the department said in a post on X, formerly known as Twitter.

No structures or homes were threatened with the fire, officials said.

The cause of the fire remains under investigation by Cal Fire. However, it came as the Santa Ana winds continued strengthening, giving way to elevated ignition risk across the county.

Gusty eastern winds are expected to continue at high speeds through Wednesday, according to the National Weather Service.

Farther north, parts of Los Angeles and San Bernardino Counties were placed under a red flag warning through Monday due to the risk of fire ignition with the strong Santa Anas. Several small brush fires were sparked Sunday afternoon in these areas amid the conditions.

As of 5 p.m., no fire watches or red flag warnings were put in effect for San Diego County, although forecasters are closely monitoring for changes in conditions.