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M0.9 Depth: 17.9 km

M0.9 Earthquake near Riverside County, California (United States)

UTC time: 2026-08-23 20:04:30 UTC Local time: —

About this earthquake

A magnitude M0.9 earthquake was recorded near Riverside County, California (United States) on August 23, 2026 at 20:04 UTC. The hypocenter lay relatively close to the surface at around 18 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by SCEDC and cross-checked across seismological networks. United States: 249 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Map

Depth profile

Depth profile Depth: 17.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 17.9 km
Shallow
17.9 km
17.9 km — close to 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: 152 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 350 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 400 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Uinkaret Field
    Distance: 449 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Mammoth Mountain
    Distance: 453 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 471 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States

Historic earthquake map · United States

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Country statistics · United States

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

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