3.2 Earthquake Shakes Bay Area Near Colma

Bay Area Residents Feel 3.2 Tremor Near Colma

A 3.2 magnitude earthquake rattled the Bay Area on Friday afternoon, November 28, 2025, with its epicenter located near Colma, approximately 1.8 miles southwest of the city. According to the U.S. Geological Survey (USGS), the quake struck at 5:03 p.m. Pacific Time with a shallow depth of 4.6 kilometers (about 2.9 miles).

The tremor was widely felt across the region, with reports coming in from San Francisco, Oakland, San Mateo, and as far as Half Moon Bay—over 10 miles from the epicenter. Local news outlets received numerous calls from residents describing noticeable shaking, though no immediate damage or injuries were reported. This event follows a series of seismic activity in California, including a 4.3 earthquake near San Juan Bautista the previous day and a cluster of quakes in the South Bay earlier that week.

Context of Recent Seismic Activity

The Bay Area's complex network of fault lines makes it highly susceptible to earthquakes. Experts note that while Friday's quake was minor, it serves as a critical reminder of the region's seismic risks. "Aftershocks are possible, though unlikely to be significant," stated USGS seismologist Dr. Elena Rodriguez. "This pattern of smaller quakes often precedes larger events over time."

"The Bay Area is a seismically active region, and residents should always be prepared for the next big one."

Earlier that morning, three earthquakes struck northern Sonoma County, magnitudes ranging from 2.7 to 4.0. This cluster of activity underscores the importance of vigilance and preparedness, especially during the holiday season when families may be traveling or gathering.

Earthquake Preparedness: Key Steps for Residents

While no damage was reported, officials emphasize the need for personal and community readiness. The San Francisco Department of Emergency Management recommends the following actions:

• Secure Your Space: Anchor heavy furniture and appliances to walls.
• Build Emergency Kits: Include water, non-perishable food, medications, and critical documents for at least 72 hours.
• Know Your Plan: Establish family meeting points and communication strategies.
• Practice Safety Drills: Regularly rehearse "Drop, Cover, and Hold On" procedures.

Comprehensive checklists are available on the SF.gov website.

What to Do During and After a Quake

During shaking, immediately drop to the ground, take cover under sturdy furniture, and hold on. Stay away from windows and heavy objects. Once shaking stops, check for injuries, inspect your home for damage, and evacuate if structural issues are detected. Be prepared for aftershocks, which can occur minutes or days later.

Looking Ahead

Scientists continue to monitor the region's fault lines, including the nearby San Andreas and Hayward faults. Friday's earthquake highlights the ongoing need for investment in retrofitting older buildings and updating infrastructure to withstand seismic activity. For real-time updates, residents can use the USGS "Did You Feel It?" system and local emergency alerts.