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M2.3 Depth: 11.5 km

M2.3 Earthquake near San Luis Obispo County, California (United States)

UTC time: 2026-07-28 01:20:21 UTC Local time: —

About this earthquake

On July 28, 2026 at 01:20 UTC, a magnitude M2.3 earthquake occurred near San Luis Obispo County, California (United States). 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: over the past 24 hours, QuakeMap24 logged 189 earthquakes, the strongest at M3.8.

Map

Depth profile

Depth profile Depth: 11.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.5 km
Shallow
11.5 km
11.5 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

  • Mammoth Mountain
    Distance: 264 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 282 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 302 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Ubehebe Craters
    Distance: 304 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Clear Lake Volcanic Field
    Distance: 450 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Soda Lakes
    Distance: 468 km ·Maar(s) ·Elevation: 1'251 m ·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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