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United States · California

M1.8 Earthquake near Imperial County, California (United States)

UTC time: 2026-09-21 15:31:47 UTC Local time: —

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About this earthquake

A magnitude M1.8 earthquake was recorded near Imperial County, California (United States) on September 21, 2026 at 15:31 UTC. 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 USGS. United States: 186 earthquakes were recorded in the past 24 hours, the strongest reaching M3.0.

Details

ID
c4e868b85dd7d7261ff0a3d0fefedd08d05b9769
Magnitude
M1.8
Depth
2.7 km
UTC time
2026-09-21 15:31:47 UTC
Local time
—
Country
United States
State
California
City
Imperial County
County
Imperial County
Source
usgs
Coordinates
33.32917, -115.71700
Temperature
26.3°C

Depth profile

Depth profile Depth: 2.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.7 km
Shallow
2.7 km
2.7 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

  • Salton Buttes
    Distance: 17 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 265 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • San Luis, Isla
    Distance: 393 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Uinkaret Field
    Distance: 413 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Francisco Volcanic Field
    Distance: 433 km ·Volcanic field ·Elevation: 3'850 m ·Last eruption: 1075 ·United States
  • Ubehebe Craters
    Distance: 440 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States

California

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 2,413 Catalogue entries

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

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Historic earthquake map · United States

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