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M1.3 Depth: 33.2 km

M1.3 Earthquake near Riverside, California (United States)

UTC time: 2026-08-23 18:30:51 UTC Local time: —

About this earthquake

A magnitude M1.3 earthquake was recorded near Riverside, California (United States) on August 23, 2026 at 18:30 UTC. The hypocenter lay relatively close to the surface at around 33 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by SCEDC. United States: over the past 24 hours, QuakeMap24 logged 242 earthquakes, the strongest at M4.1.

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Depth profile

Depth profile Depth: 33.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 33.2 km
Shallow
33.2 km
33.2 km — deeper 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: 188 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 339 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 432 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Pinacate
    Distance: 435 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mono-Inyo Craters
    Distance: 450 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 471 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·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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