4.0 magnitude earthquake 4 km from San Ramon, California, United States
2025-12-20 03:56:09 UTC
UTC time:
Saturday, December 20, 2025 03:56 AM
Your time:
2025-12-20T03:56:09Z
Magnitude Type:
mw
USGS page:
M 4.0 - 5 km SE of San Ramon, CA
USGS status:
Reviewed by a seismologist
Reports from the public:
2116 people
2025-12-20 03:56:09 UTC
4.0 magnitude, 9 km depth
San Ramon, California, United States
San Ramon, California, United States
4.0 magnitude earthquake
Today
2025-12-20 03:56:09 UTC
at 03:56
December 20, 2025 UTC
Location:
Epicenter at 37.748, -121.942
4.2 km from
San Ramon
(2.2 miles)
San Francisco Bay Area, California
Depth: 9 km