2.1

M2.1 Earthquake 13 km NE of Alum Rock, CA — October 7, 2025

2025-10-07 21:36:04 UTC (2025-10-07) · approx. 1:36 PM UTC-8 local

MagnitudeM2.1(md)
Time21:36 UTC≈ 1:36 PM UTC-8
Depth16.5 kmshallow crustal
Coordinates37.451°, -121.718°
Felt byNo felt reports
StatusAutomatic (preliminary)
Map showing earthquake epicenter at 37.45°, -121.72°

Earthquake Details

Magnitude
2.1 md
Depth
16.5 km
shallow crustal
Location
37.4507°N
-121.7178°E

Technical Information

Event ID
nc75246301
Event Type
earthquake
Status
Automatic
Significance
67
Stations Used
5
Azimuthal Gap
147.0°
Min Station Distance
0.231°
RMS Residual
0.07 sec
Last Updated
2025-10-07 23:22:19 UTC

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Actions

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Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75246301). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, October 7, 2025). M2.1 Earthquake 13 km NE of Alum Rock, CA — October 7, 2025. Retrieved October 7, 2025 from https://www.earthquaketracker.org/earthquakes/event/nc75246301/