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United States · California

M2.1 Earthquake near Stanislaus County, California (United States)

UTC time: 2026-09-30 04:04:06 UTC Local time: —

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About this earthquake

On September 30, 2026 at 04:04 UTC, a magnitude M2.1 earthquake occurred near Stanislaus County, California (United States). The hypocenter lay relatively close to the surface at around 4 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 178 earthquakes were recorded in the past 24 hours, the strongest reaching M4.3.

Depth profile

Depth profile Depth: 3.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 3.7 km
Shallow
3.7 km
3.7 km — shallower than 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

Volcanoes nearby

  • Clear Lake Volcanic Field
    Distance: 207 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mammoth Mountain
    Distance: 215 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 218 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 223 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Soda Lakes
    Distance: 324 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Lassen Volcanic Center
    Distance: 341 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Mineta San Jose International AirportUnited States · SJC · KSJC
    42.5 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-30

Nuclear power plants

  • Vallecitos nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    39.5 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

30 Sep 2025 – 30 Sep 2026 · M ≥ 2.0 · 2,441 Catalogue entries

Of 2,440 other entries for this area and period, 2,037 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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Country statistics · United States

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

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