San Ramon, CA – Residents across the East Bay felt a brief jolt Friday morning when a magnitude 3.4 earthquake struck just southeast of San Ramon, shaking homes and offices but causing no immediate reports of damage or injuries.
According to the U.S. Geological Survey, the earthquake hit at 10:33 a.m. local time, centered about 5 kilometers southeast of San Ramon at a depth of roughly 4 miles. The quake was reviewed and confirmed by seismologists, with shaking widely reported in San Ramon, Danville, Dublin, Pleasanton, and parts of San Jose and San Francisco.
The USGS “Did You Feel It?” system logged hundreds of responses within minutes, with many residents describing light but noticeable shaking, rattling windows, and brief movement of hanging objects. The event registered a Community Internet Intensity of IV, which typically means shaking is felt indoors by many but rarely causes damage.
While earthquakes of this size are common in Northern California, officials remind residents to review basic safety steps, including securing heavy furniture, knowing safe spots to drop and cover, and checking emergency kits.
No aftershocks were immediately reported, though smaller follow-up tremors remain possible. The USGS continues to monitor activity, and additional updates may be issued if conditions change.
