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United States · California

M3.0 Earthquake near Contra Costa County, California (United States)

UTC time: 2026-09-14 13:47:28 UTC Local time: —
Magnitude
M3.0
Depth
16.9 km
Source
USGS

California · Contra Costa County

Country overview

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About this earthquake

On September 14, 2026 at 13:47 UTC, a magnitude M3.0 earthquake occurred near Contra Costa County, California (United States). The hypocenter lay relatively close to the surface at around 17 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 149 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Depth profile

Depth profile Depth: 16.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 16.9 km
Shallow
16.9 km
16.9 km — close to the regional average (15.2 km)
Regional average: 15.2 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

1felt 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 14, 2026, 1:49 PM UTC · Last checked: Oct 28, 2026, 5:47 AM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Clear Lake Volcanic Field
    Distance: 148 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mono Lake Volcanic Field
    Distance: 244 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 244 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mammoth Mountain
    Distance: 246 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Lassen Volcanic Center
    Distance: 292 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 314 km ·Maar(s) ·Elevation: 1'251 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Buchanan FieldUnited States · CCR · KCCR
    25.2 kmStraight-line distance
  • Oakland San Francisco Bay AirportUnited States · OAK · KOAK
    40.0 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-03

Nuclear power plants

  • Vallecitos nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    29.4 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

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 ≥ 2.0 · 2,447 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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