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United States · California

M0.9 Earthquake near San Dimas, California (United States)

UTC time: 2026-10-31 06:44:15 UTC Local time: —

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About this earthquake

A magnitude M0.9 earthquake was recorded near San Dimas, California (United States) on October 31, 2026 at 06:44 UTC. The hypocenter lay relatively close to the surface at around 14 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 190 earthquakes, the strongest at M4.3.

Details

ID
c00f4510f626bd1b7087056ac51941ab1b4af6d7
Magnitude
M0.9
Depth
13.8 km
UTC time
2026-10-31 06:44:15 UTC
Local time
—
Country
United States
State
California
City
San Dimas
County
Los Angeles County
Source
usgs
Coordinates
34.07550, -117.80733
Temperature
14.7°C

Depth profile

Depth profile Depth: 13.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.8 km
Shallow
13.8 km
13.8 km — close to 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: 225 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 329 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 410 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 429 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 450 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 472 km ·Volcanic field ·Elevation: 1'183 m ·Mexico

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Ontario International AirportUnited States · ONT · KONT
    19.1 kmStraight-line distance
  • Long Beach International AirportUnited States · LGB · KLGB
    42.8 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    44.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-31

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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