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M0.5 Depth: 15.1 km

M0.5 Earthquake near Riverside County, California (United States)

UTC time: 2026-08-28 23:01:22 UTC Local time: —

About this earthquake

A magnitude M0.5 earthquake was recorded near Riverside County, California (United States) on August 28, 2026 at 23:01 UTC. The hypocenter lay relatively close to the surface at around 15 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 186 earthquakes, the strongest at M3.2.

Map

Depth profile

Depth profile Depth: 15.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15.1 km
Shallow
15.1 km
15.1 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: 115 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 363 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 378 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Uinkaret Field
    Distance: 444 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Luis, Isla
    Distance: 466 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Mammoth Mountain
    Distance: 487 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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