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United States · California

M1.1 Earthquake near San Diego County, California (United States)

UTC time: 2026-08-20 21:20:34 UTC Local time: —

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About this earthquake

A magnitude M1.1 earthquake was recorded near San Diego County, California (United States) on August 20, 2026 at 21:20 UTC. With a focal depth of about 13 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. 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: 185 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

ID
de2d670f39b4c8a1d491d0b4a6578b240596c2ce
Magnitude
M1.1
Depth
12.6 km
UTC time
2026-08-20 21:20:34 UTC
Local time
—
Country
United States
State
California
City
San Diego County
County
San Diego County
Source
usgs
Coordinates
33.03100, -116.51984
Temperature
32.6°C

Depth profile

Depth profile Depth: 12.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.6 km
Shallow
12.6 km
12.6 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

Volcanoes nearby

  • Salton Buttes
    Distance: 86 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 312 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • San Luis, Isla
    Distance: 395 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Ubehebe Craters
    Distance: 452 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Jaraguay Volcanic Field
    Distance: 454 km ·Volcanic field ·Elevation: 960 m ·Mexico
  • Uinkaret Field
    Distance: 484 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States

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.

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