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M1.1 Depth: 3.2 km

M1.1 Earthquake near Riverside County, California (United States)

UTC time: 2026-05-21 09:38:51 UTC Local time: —

About this earthquake

On May 21, 2026 at 09:38 UTC, a magnitude M1.1 earthquake occurred near Riverside County, California (United States). With a focal depth of about 3 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 SCEDC. United States: 125 earthquakes were recorded in the past 24 hours, the strongest reaching M2.9.

Map

Depth profile

Depth profile Depth: 3.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 3.2 km
Shallow
3.2 km
3.2 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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: 94 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 339 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 365 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Uinkaret Field
    Distance: 391 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Francisco Volcanic Field
    Distance: 442 km ·Volcanic field ·Elevation: 3'850 m ·Last eruption: 1075 ·United States
  • San Luis, Isla
    Distance: 468 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico

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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