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United States · California

M1.5 Earthquake near Riverside County, California (United States)

UTC time: 2026-09-20 06:03:43 UTC Local time: —

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About this earthquake

On September 20, 2026 at 06:03 UTC, a magnitude M1.5 earthquake occurred near Riverside County, California (United States). The hypocenter lay relatively close to the surface at around 9 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 199 earthquakes were recorded in the past 24 hours, the strongest reaching M5.3.

Details

ID
dfcfbb1d89a7da7afbfe538fd9a856022172b815
Magnitude
M1.5
Depth
8.7 km
UTC time
2026-09-20 06:03:43 UTC
Local time
—
Country
United States
State
California
City
Riverside County
County
Riverside County
Source
usgs
Coordinates
33.44767, -116.42733
Temperature
19.7°C

Depth profile

Depth profile Depth: 8.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.7 km
Shallow
8.7 km
8.7 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: 80 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Pinacate
    Distance: 327 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Ubehebe Craters
    Distance: 408 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • San Luis, Isla
    Distance: 431 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Uinkaret Field
    Distance: 443 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Francisco Volcanic Field
    Distance: 484 km ·Volcanic field ·Elevation: 3'850 m ·Last eruption: 1075 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Palm Springs International AirportUnited States · PSP · KPSP
    43.1 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-20

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

California

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 2.0 · 2,417 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

Open history map
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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