2.1

M2.1 Earthquake 10 km WNW of Cobb, CA — September 28, 2026

2026-09-28 20:20:43 UTC (4 days ago) · approx. 12:20 PM UTC-8 local

MagnitudeM2.1(md)
Time20:20 UTC≈ 12:20 PM UTC-8
Depth0.6 kmshallow crustal
Coordinates38.849°, -122.837°
Felt byNo felt reports
StatusAutomatic (preliminary)
Map showing earthquake epicenter at 38.85°, -122.84°

Earthquake Details

Magnitude
2.1 md
Depth
0.6 km
shallow crustal
Location
38.8487°N
-122.8373°E

Technical Information

Event ID
nc75443977
Event Type
earthquake
Status
Automatic
Significance
65
Stations Used
30
Azimuthal Gap
88.0°
Min Station Distance
0.010°
RMS Residual
0.04 sec
Last Updated
2026-09-28 22:12:22 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: nc75443977). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 28, 2026). M2.1 Earthquake 10 km WNW of Cobb, CA — September 28, 2026. Retrieved September 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75443977/