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M1.1 Depth: 19.8 km

M1.1 Earthquake near 6 km NW of Foothill Ranch, CA (United States)

UTC time: 2025-12-31 06:35:04 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near 6 km NW of Foothill Ranch, CA (United States) on December 31, 2025 at 06:35 UTC. With a focal depth of about 20 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 196 earthquakes were recorded in the past 24 hours, the strongest reaching M4.3.

Details

Magnitude
M1.1
Depth
19.8 km
UTC time
2025-12-31 06:35:04 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
33.72333, -117.70100
Temperature
19.0°C

Map

Depth profile

Depth profile Depth: 19.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.8 km
Shallow
19.8 km
19.8 km — deeper 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: 202 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 367 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 444 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mammoth Mountain
    Distance: 451 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 469 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 490 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·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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