2.1

M2.1 Earthquake 4 km S of Redlands, CA — October 9, 2025

2025-10-09 15:00:34 UTC (2025-10-09) · approx. 7:00 AM UTC-8 local

MagnitudeM2.1(ml)
Time15:00 UTC≈ 7:00 AM UTC-8
Depth7.0 kmshallow crustal
Coordinates34.016°, -117.188°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 34.02°, -117.19°

Earthquake Details

Magnitude
2.1 ml
Depth
7.0 km
shallow crustal
Location
34.0158°N
-117.1880°E

Technical Information

Event ID
ci41105751
Event Type
earthquake
Status
✓ Reviewed
Significance
67
Stations Used
94
Azimuthal Gap
14.0°
Min Station Distance
0.066°
RMS Residual
0.17 sec
Last Updated
2025-10-09 19:26:16 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: ci41105751). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, October 9, 2025). M2.1 Earthquake 4 km S of Redlands, CA — October 9, 2025. Retrieved October 9, 2025 from https://www.earthquaketracker.org/earthquakes/event/ci41105751/