3.9 magnitude earthquake 4 km from San Ramon, California, United States
2025-12-21 02:31:54 UTC
UTC time:
Sunday, December 21, 2025 02:31 AM
Your time:
2025-12-21T02:31:54Z
Magnitude Type:
mw
USGS page:
M 3.9 - 5 km SE of San Ramon, CA
USGS status:
Reviewed by a seismologist
Reports from the public:
2024 people
2025-12-21 02:31:54 UTC
3.9 magnitude, 10 km depth
San Ramon, California, United States
San Ramon, California, United States
3.9 magnitude earthquake
2025-12-21 02:31:54 UTC
at 02:31
December 21, 2025 UTC
Location:
Epicenter at 37.747, -121.946
4.2 km from
San Ramon
(2.2 miles)
San Francisco Bay Area, California
Depth: 10 km
This earthquake is on the map of Northern California and San Francisco Bay Area, California and is close to:
San Francisco Bay Area, California
San Francisco Bay, California
San Pablo Bay, California
Northern California
Long Valley Area, California
Central California
Lassen Peak Area, California
Coast Of California
Medicine Lake Area, California
Santa Barbara Channel, California
Nevada
Santa Monica Bay, California