2.2

M2.2 Earthquake 5 km SE of San Ramon, CA — December 22, 2025

2025-12-22 23:00:50 UTC (2025-12-22) · approx. 3:00 PM UTC-8 local

MagnitudeM2.2(md)
Time23:00 UTC≈ 3:00 PM UTC-8
Depth9.0 kmshallow crustal
Coordinates37.751°, -121.942°
Felt byNo felt reports
StatusAutomatic (preliminary)
Map showing earthquake epicenter at 37.75°, -121.94°

Earthquake Details

Magnitude
2.2 md
Depth
9.0 km
shallow crustal
Location
37.7507°N
-121.9420°E

Technical Information

Event ID
nc75284981
Event Type
earthquake
Status
Automatic
Significance
72
Stations Used
22
Azimuthal Gap
57.0°
Min Station Distance
0.098°
RMS Residual
0.06 sec
Last Updated
2025-12-22 23:02:29 UTC

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Actions

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Understanding This Data

Magnitude 2.2 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75284981). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, December 22, 2025). M2.2 Earthquake 5 km SE of San Ramon, CA — December 22, 2025. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/nc75284981/