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United States · California

M3.4 Earthquake near Ontario, California (United States)

UTC time: 2026-09-02 12:37:12 UTC Local time: —

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About this earthquake

On September 2, 2026 at 12:37 UTC, a magnitude M3.4 earthquake occurred near Ontario, California (United States). The hypocenter lay relatively close to the surface at around 6 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 165 earthquakes were recorded in the past 24 hours, the strongest reaching M2.7.

Details

ID
1ea7af9a55f0eda6f0fbdfd3015dc5436a73cf25
Magnitude
M3.4
Depth
6.2 km
UTC time
2026-09-02 12:37:12 UTC
Local time
—
Country
United States
State
California
City
Ontario
County
San Bernardino County
Source
usgs
Coordinates
34.01333, -117.59067
Temperature
15.5°C

Depth profile

Depth profile Depth: 6.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 6.2 km
Shallow
6.2 km
6.2 km — shallower than the regional average (15.3 km)
Regional average: 15.3 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Felt reports

57felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Sep 2, 2026, 7:29 PM UTC · Last checked: Oct 3, 2026, 12:07 AM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Salton Buttes
    Distance: 204 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 335 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 423 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 441 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Pinacate
    Distance: 451 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mono Lake Volcanic Field
    Distance: 462 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Ontario International AirportUnited States · ONT · KONT
    4.8 kmStraight-line distance
  • San Bernardino International AirportUnited States · SBD · KSBD
    33.9 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    45.6 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-29

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

California

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 239 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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