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M0.4 Depth: 15.7 km

M0.4 Earthquake near Riverside County, California (United States)

UTC time: 2026-08-08 03:01:55 UTC Local time: —

About this earthquake

A magnitude M0.4 earthquake was recorded near Riverside County, California (United States) on August 8, 2026 at 03:01 UTC. With a focal depth of about 16 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 195 earthquakes, the strongest at M4.0.

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Depth profile

Depth profile Depth: 15.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15.7 km
Shallow
15.7 km
15.7 km — close to the regional average (15.5 km)
Regional average: 15.5 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: 124 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 371 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 374 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Uinkaret Field
    Distance: 448 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Luis, Isla
    Distance: 472 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Mammoth Mountain
    Distance: 481 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·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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