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United States · California

M1.3 Earthquake near Ontario, California (United States)

UTC time: 2026-10-21 21:30:58 UTC Local time: —

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About this earthquake

A magnitude M1.3 earthquake was recorded near Ontario, California (United States) on October 21, 2026 at 21:30 UTC. With a focal depth of about 16 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: 127 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

ID
97582e48fb1e6f5ad97b8b78592f1a244853a209
Magnitude
M1.3
Depth
16.4 km
UTC time
2026-10-21 21:30:58 UTC
Local time
—
Country
United States
State
California
City
Ontario
County
San Bernardino County
Source
scedc
Coordinates
34.01567, -117.64000
Temperature
26.4°C

Depth profile

Depth profile Depth: 16.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 16.4 km
Shallow
16.4 km
16.4 km — close to the regional average (15.3 km)
Regional average: 15.3 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: 208 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 335 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 421 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 439 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Pinacate
    Distance: 455 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mono Lake Volcanic Field
    Distance: 460 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Ontario International AirportUnited States · ONT · KONT
    5.7 kmStraight-line distance
  • San Bernardino International AirportUnited States · SBD · KSBD
    38.2 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    43.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

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

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

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

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