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United States · California

M1.3 Earthquake near Riverside County, California (United States)

UTC time: 2026-08-19 21:36:29 UTC Local time: —

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About this earthquake

On August 19, 2026 at 21:36 UTC, a magnitude M1.3 earthquake occurred near Riverside County, California (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. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 186 earthquakes, the strongest at M4.1.

Details

ID
e35a997330f23413b5cb3763b4f05ed686c7630b
Magnitude
M1.3
Depth
8.6 km
UTC time
2026-08-19 21:36:29 UTC
Local time
—
Country
United States
State
California
City
Riverside County
County
Riverside County
Source
usgs
Coordinates
33.78433, -115.96100
Temperature
34.4°C

Depth profile

Depth profile Depth: 8.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.6 km
Shallow
8.6 km
8.6 km — shallower than the regional average (15.2 km)
Regional average: 15.2 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: 73 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 315 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 384 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Uinkaret Field
    Distance: 387 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Francisco Volcanic Field
    Distance: 429 km ·Volcanic field ·Elevation: 3'850 m ·Last eruption: 1075 ·United States
  • San Luis, Isla
    Distance: 448 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico

California

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 2,447 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

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

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