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M1.1 Depth: 9.5 km

M1.1 Earthquake near 8 km N of Westmorland, CA (United States)

UTC time: 2025-12-15 15:18:17 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near 8 km N of Westmorland, CA (United States) on December 15, 2025 at 15:18 UTC. The hypocenter lay relatively close to the surface at around 9 km, increasing how strongly it was felt. 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 227 earthquakes, the strongest at M5.3.

Details

Magnitude
M1.1
Depth
9.5 km
UTC time
2025-12-15 15:18:17 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
33.11167, -115.61267
Temperature
21.8°C

Map

Depth profile

Depth profile Depth: 9.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 9.5 km
Shallow
9.5 km
9.5 km — shallower than the regional average (15.7 km)
Regional average: 15.7 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: 9 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 243 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • San Luis, Isla
    Distance: 367 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Uinkaret Field
    Distance: 428 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Jaraguay Volcanic Field
    Distance: 434 km ·Volcanic field ·Elevation: 960 m ·Mexico
  • San Francisco Volcanic Field
    Distance: 439 km ·Volcanic field ·Elevation: 3'850 m ·Last eruption: 1075 ·United States

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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