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M1.0 Depth: 3.2 km

M1.0 Earthquake near Riverside County, California (United States)

UTC time: 2026-05-20 13:21:33 UTC Local time: —

About this earthquake

On May 20, 2026 at 13:21 UTC, a magnitude M1.0 earthquake occurred near Riverside County, California (United States). The hypocenter lay relatively close to the surface at around 3 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 146 earthquakes, the strongest at M3.8.

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: 92 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 337 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 368 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Uinkaret Field
    Distance: 392 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: 465 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico

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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