3.7-Magnitude Quake Jolts San Luis Obispo County

ATASCADERO, Calif. - A 3.7-magnitude earthquake struck 7 kilometers southwest of Atascadero on Saturday evening, Sept. 13, at 7:50 p.m. PDT, causing light shaking across San Luis Obispo County but no reported damage or injuries.

Residents and officials say the relatively minor event serves as a reminder to review emergency plans and preparedness measures ahead of larger quakes.

Seismic Details

• Origin: 7 km SW of Atascadero, San Luis Obispo County
• Time: 7:50 p.m. PDT, Sept. 13, 2025
• Magnitude: 3.7 ml, confirmed by U.S. Geological Survey seismologists
• Reports: 63 residents across the region reported feeling the quake

Impact and Community Response

Local reports indicated only light shaking, with some residents feeling brief swaying of structures. No aftershocks of significance have been recorded as of early Sunday morning.

“Even small quakes underscore the importance of knowing your family’s emergency plan and having supplies ready,” said a county emergency management official.

Preparedness Reminder

• Check emergency kit contents and expiration dates.
• Secure heavy furniture and appliances.
• Review evacuation routes and communication plans with household members.

Continued monitoring by the USGS will determine if any aftershocks follow the initial event.