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M1.1 Depth: 12.2 km

M1.1 Earthquake near Winchester, California (United States)

UTC time: 2026-07-28 21:10:40 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near Winchester, California (United States) on July 28, 2026 at 21:10 UTC. The hypocenter lay relatively close to the surface at around 12 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 165 earthquakes were recorded in the past 24 hours, the strongest reaching M4.8.

Map

Depth profile

Depth profile Depth: 12.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.2 km
Shallow
12.2 km
12.2 km — shallower than the regional average (15.5 km)
Regional average: 15.5 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: 141 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 372 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 388 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Uinkaret Field
    Distance: 463 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Mammoth Mountain
    Distance: 474 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • San Luis, Isla
    Distance: 482 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico

Historic earthquake map · United States

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Country statistics · United States

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

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