The San Jacinto fault produced another earthquake early Thursday morning at 5:48 a.m. The quake center was 12 miles southeast of Ocotillo Wells. The quake was felt in places like Alpine, San Diego, Spring Valley, Oceanside and Valley Center.

For more info, please read the original article by San Diego Union Tribune:
https://www.sandiegouniontribune.com/news/science/sd-me-ocotillo-desert-20181129-story.html