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M1.4 Depth: 13.4 km

M1.4 Earthquake near 3.5 km ( 2.2 mi) SSE (az= 147.0) from Upland, CA (United States)

UTC time: 2025-12-15 21:04:03 UTC Local time: —

About this earthquake

On December 15, 2025 at 21:04 UTC, a magnitude M1.4 earthquake occurred near 3.5 km ( 2.2 mi) SSE (az= 147.0) from Upland, CA (United States). With a focal depth of about 13 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 SCEDC and cross-checked across seismological networks. United States: 227 earthquakes were recorded in the past 24 hours, the strongest reaching M5.3.

Details

Magnitude
M1.4
Depth
13.4 km
UTC time
2025-12-15 21:04:03 UTC
Local time
—
Country
United States
City
California
Source
scedc
Coordinates
34.07117, -117.62783
Temperature
22.5°C

Map

Depth profile

Depth profile Depth: 13.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.4 km
Shallow
13.4 km
13.4 km — close to 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: 210 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 328 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 416 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 434 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 455 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 457 km ·Volcanic field ·Elevation: 1'183 m ·Mexico

Historic earthquake map · United States

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Country statistics · United States

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View earthquake KPIs, strongest and latest events, and averages for this country.

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