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M1.5 Depth: 15.0 km

M1.5 Earthquake near 6 km SE of Grand Terrace, CA (United States)

UTC time: 2025-12-09 03:56:07 UTC Local time: —

About this earthquake

A magnitude M1.5 earthquake was recorded near 6 km SE of Grand Terrace, CA (United States) on December 9, 2025 at 03:56 UTC. With a focal depth of about 15 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 195 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

Magnitude
M1.5
Depth
15.0 km
UTC time
2025-12-09 03:56:07 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
33.99333, -117.27033
Temperature
22.4°C

Map

Depth profile

Depth profile Depth: 15 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15 km
Shallow
15 km
15 km — close to the regional average (15.6 km)
Regional average: 15.6 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: 177 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: 425 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mammoth Mountain
    Distance: 435 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 452 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Uinkaret Field
    Distance: 460 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·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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