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United States · California

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

UTC time: 2026-09-22 00:04:09 UTC Local time: —
Magnitude
M2.3
Depth
5.1 km
Source
USGS

California · San Luis Obispo County

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About this earthquake

On September 22, 2026 at 00:04 UTC, a magnitude M2.3 earthquake occurred near San Luis Obispo County, California (United States). With a focal depth of about 5 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 181 earthquakes, the strongest at M3.0.

Depth profile

Depth profile Depth: 5.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5.1 km
Shallow
5.1 km
5.1 km — shallower than the regional average (15.2 km)
Regional average: 15.2 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: 277 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 292 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 309 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Ubehebe Craters
    Distance: 351 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Clear Lake Volcanic Field
    Distance: 393 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Soda Lakes
    Distance: 463 km ·Maar(s) ·Elevation: 1'251 m ·United States

California

Context for this earthquake

22 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 2,416 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

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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