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M1.9 Depth: 9.4 km

M1.9 Earthquake near Riverside County (United States)

UTC time: 2025-12-09 21:56:26 UTC Local time: —

About this earthquake

A magnitude M1.9 earthquake was recorded near Riverside County (United States) on December 9, 2025 at 21:56 UTC. With a focal depth of about 9 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by SCEDC and cross-checked across seismological networks. United States: 190 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

Magnitude
M1.9
Depth
9.4 km
UTC time
2025-12-09 21:56:26 UTC
Local time
—
Country
United States
City
Riverside County
Source
scedc
Coordinates
33.85733, -117.42867
Temperature
28.4°C

Map

Depth profile

Depth profile Depth: 9.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 9.4 km
Shallow
9.4 km
9.4 km — shallower than 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: 183 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 352 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 429 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mammoth Mountain
    Distance: 444 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 462 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Uinkaret Field
    Distance: 481 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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