2.1

M2.1 Earthquake 6 km NNE of Fontana, CA — October 25, 2023

2023-10-25 17:16:30 UTC (2023-10-25) · approx. 9:16 AM UTC-8 local

MagnitudeM2.1(ml)
Time17:16 UTC≈ 9:16 AM UTC-8
Depth7.5 kmshallow crustal
Coordinates34.143°, -117.422°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 34.14°, -117.42°

Earthquake Details

Magnitude
2.1 ml
Depth
7.5 km
shallow crustal
Location
34.1430°N
-117.4217°E

Technical Information

Event ID
ci40587312
Event Type
earthquake
Status
✓ Reviewed
Significance
71
Stations Used
79
Azimuthal Gap
25.0°
Min Station Distance
0.046°
RMS Residual
0.17 sec
Last Updated
2023-10-25 18:12:16 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: ci40587312). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, October 25, 2023). M2.1 Earthquake 6 km NNE of Fontana, CA — October 25, 2023. Retrieved October 25, 2023 from https://www.earthquaketracker.org/earthquakes/event/ci40587312/