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M1.2 Depth: 11.2 km

M1.2 Earthquake near 5 km WNW of Calimesa, CA (United States)

UTC time: 2025-12-28 15:59:20 UTC Local time: —

About this earthquake

On December 28, 2025 at 15:59 UTC, a magnitude M1.2 earthquake occurred near 5 km WNW of Calimesa, CA (United States). The hypocenter lay relatively close to the surface at around 11 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: 150 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude
M1.2
Depth
11.2 km
UTC time
2025-12-28 15:59:20 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
34.00267, -117.09933
Temperature
9.8°C

Map

Depth profile

Depth profile Depth: 11.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.2 km
Shallow
11.2 km
11.2 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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: 164 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 337 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 412 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mammoth Mountain
    Distance: 439 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Uinkaret Field
    Distance: 447 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Mono-Inyo Craters
    Distance: 457 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States

Historic earthquake map · United States

Open history map
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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