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M1.0 Depth: 14.3 km

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

UTC time: 2026-07-18 04:20:37 UTC Local time: —

About this earthquake

On July 18, 2026 at 04:20 UTC, a magnitude M1.0 earthquake occurred near San Dimas, California (United States). With a focal depth of about 14 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 event was recorded by USGS. United States: 192 earthquakes were recorded in the past 24 hours, the strongest reaching M3.2.

Map

Depth profile

Depth profile Depth: 14.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 14.3 km
Shallow
14.3 km
14.3 km — close to the regional average (15.6 km)
Regional average: 15.6 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: 227 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 326 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 407 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 425 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 446 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 474 km ·Volcanic field ·Elevation: 1'183 m ·Mexico

Historic earthquake map · United States

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Country statistics · United States

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