2024-10-01 19:56:21 UPDATED: (M3.5) Southern California 34.0 -117.6 (1cbfb)

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M3.5 Earthquake - Southern California

Preliminary Report
Magnitude 3.5
Date-Time
  • Universal Time (UTC): 1 Oct 2024 19:56:22
  • Time near the Epicenter (1): 1 Oct 2024 12:56:22
  • Time in your area (1): 1 Oct 2024 11:56:22
Location 34.041N 117.608W
Depth 4 km
Distances
  • 4.7 km (2.9 mi) ESE of Ontario, California
  • 7.4 km (4.6 mi) SSE of Upland, California
  • 7.4 km (4.6 mi) S of Rancho Cucamonga, California
  • 8.1 km (5.0 mi) ENE of Chino, California
  • 254.4 km (157.7 mi) NW of Mexicali, Mexico
Location Uncertainty Horizontal: 0.1 km; Vertical 0.3 km
Parameters Nph = 121; Dmin = 0.8 km; Rmss = 0.19 seconds; Gp = 34°
Version = 6
Event ID ci 40749799 ***This event has been revised.

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
CISN Southern California Management Center
Caltech Seismological Laboratory
U.S. Geological Survey

http://www.cisn.org/scmc.html
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