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M1.0 Depth: 12.2 km

M1.0 Earthquake near San Diego County, California (United States)

UTC time: 2026-08-23 23:31:35 UTC Local time: —

About this earthquake

A magnitude M1.0 earthquake was recorded near San Diego County, California (United States) on August 23, 2026 at 23:31 UTC. The hypocenter lay relatively close to the surface at around 12 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 261 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Map

Depth profile

Depth profile Depth: 12.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.2 km
Shallow
12.2 km
12.2 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

Volcanoes nearby

  • Salton Buttes
    Distance: 81 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 316 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • San Luis, Isla
    Distance: 406 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Ubehebe Craters
    Distance: 437 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Jaraguay Volcanic Field
    Distance: 467 km ·Volcanic field ·Elevation: 960 m ·Mexico
  • Uinkaret Field
    Distance: 471 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States

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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