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United States · California

M1.7 Earthquake near Diamond Bar, California (United States)

UTC time: 2026-09-09 19:32:07 UTC Local time: —

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About this earthquake

A magnitude M1.7 earthquake was recorded near Diamond Bar, California (United States) on September 9, 2026 at 19:32 UTC. With a focal depth of about 13 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: 218 earthquakes were recorded in the past 24 hours, the strongest reaching M3.0.

Details

ID
c9cc8057bd5f00e8d25f68924fe03084372da331
Magnitude
M1.7
Depth
13.2 km
UTC time
2026-09-09 19:32:07 UTC
Local time
—
Country
United States
State
California
City
Diamond Bar
County
Los Angeles County
Source
usgs
Coordinates
33.98933, -117.82767
Temperature
38.6°C

Depth profile

Depth profile Depth: 13.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.2 km
Shallow
13.2 km
13.2 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: 223 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 339 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 419 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 438 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 459 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 469 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
    22.2 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    35.2 kmStraight-line distance
  • Long Beach International AirportUnited States · LGB · KLGB
    35.4 kmStraight-line distance

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

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

09 Sep 2025 – 09 Sep 2026 · M ≥ 2.0 · 2,415 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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