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M1.1 Depth: 9.1 km

M1.1 Earthquake near Rancho Cucamonga (United States)

UTC time: 2025-12-17 21:51:10 UTC Local time: —

About this earthquake

On December 17, 2025 at 21:51 UTC, a magnitude M1.1 earthquake occurred near Rancho Cucamonga (United States). With a focal depth of about 9 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 data is provided by USGS and cross-checked across seismological networks. United States: 222 earthquakes were recorded in the past 24 hours, the strongest reaching M4.9.

Details

Magnitude
M1.1
Depth
9.1 km
UTC time
2025-12-17 21:51:10 UTC
Local time
—
Country
United States
City
Rancho Cucamonga
Source
usgs
Coordinates
34.14917, -117.51167
Temperature
23.1°C

Map

Depth profile

Depth profile Depth: 9.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 9.1 km
Shallow
9.1 km
9.1 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: 205 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 319 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 411 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 429 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 449 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 453 km ·Volcanic field ·Elevation: 1'183 m ·Mexico

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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