A magnitude 2.1 earthquake struck near San Ramon, California, on December 8, 2025. The tremor occurred at 2:11 a.m. Its epicenter was located approximately 2 miles southeast of San Ramon, at a depth of 5 miles.
Latest Earthquake Details
- Magnitude: 2.1
- Location: Near San Ramon, CA
- Epicenter: 2 miles southeast of San Ramon
- Depth: 5 miles
- Time: 2:11 a.m. PST
Community Response
The U.S. Geological Survey (USGS) encourages residents to report their experience of the earthquake. So far, four individuals have submitted their responses through the agency’s online Felt Report form.
Recent Seismic Activity
This earthquake follows another notable event in the region. Just two days prior, a magnitude 2.6 quake was reported near Livermore, CA.
Understanding Earthquake Magnitude
Magnitude measures the energy released during an earthquake, as defined by the U.S. Geological Survey. It has replaced the previous Richter scale. Here are key points about earthquake magnitudes:
- Quakes between 2.5 to 5.4 are felt but generally cause minimal damage.
- Earthquakes below 2.5 are rarely sensed by individuals.
In total, the world experiences an estimated 500,000 detectable earthquakes each year. Out of these, around 100,000 are felt, and approximately 100 cause damage.
Earthquake Safety Tips
To enhance personal safety during an earthquake, follow these expert recommendations:
- If you are in a car: Pull over, stop, and set your parking brake.
- If you are in bed: Turn face-down and protect your head with a pillow.
- If you are outdoors: Move away from buildings and stay put.
- If you are indoors: Remain inside, avoid doorways, and shelter under sturdy furniture.
Key Actions During an Earthquake
The primary method for protection is to drop, cover, and hold on. Secure yourself under furniture, or if unavailable, move to an interior wall away from windows.
Post-Earthquake Risks
After an earthquake, additional hazards may arise. Be alert for:
- Structural damage to buildings
- Leaking gas and water lines
- Downed power lines
It is crucial to prepare for aftershocks. Be ready to repeat the drop, cover, and hold on procedure.
