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M2.1 Depth: 14.6 km

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

UTC time: 2026-03-29 08:05:17 UTC Local time: —

About this earthquake

A magnitude M2.1 earthquake was recorded near Contra Costa County, California (United States) on March 29, 2026 at 08:05 UTC. With a focal depth of about 15 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by EMSC and cross-checked across seismological networks. United States: 188 earthquakes were recorded in the past 24 hours, the strongest reaching M5.4.

Map

Depth profile

Depth profile Depth: 14.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 14.6 km
Shallow
14.6 km
14.6 km — close to the regional average (15.8 km)
Regional average: 15.8 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: 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: 293 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 314 km ·Maar(s) ·Elevation: 1'251 m ·United States

Historic earthquake map · United States

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Country statistics · United States

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

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