Today: 3.9 magnitude earthquake near San Ramon, California, United States
Yesterday: 4.0 magnitude earthquake near San Ramon, California, United States
3.5 magnitude earthquake 4 km from Ridgemark, California, United States
2025-12-21 20:40:49 UTC
UTC time:
Sunday, December 21, 2025 20:40 PM
Your time:
2025-12-21T20:40:49Z
Magnitude Type:
ml
USGS page:
M 3.5 - 5 km SW of Ridgemark, CA
USGS status:
Reviewed by a seismologist
Reports from the public:
38 people
2025-12-21 20:40:49 UTC
3.5 magnitude, 7 km depth
Ridgemark, California, United States
Ridgemark, California, United States
3.5 magnitude earthquake
Today
2025-12-21 20:40:49 UTC
at 20:40
December 21, 2025 UTC
Location:
Epicenter at 36.786, -121.41
4.2 km from
Ridgemark
(3.2 miles)
Depth: 7 km