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United States · California

M1.1 Earthquake near Duarte, California (United States)

UTC time: 2026-08-21 18:37:56 UTC Local time: —

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About this earthquake

On August 21, 2026 at 18:37 UTC, a magnitude M1.1 earthquake occurred near Duarte, California (United States). With a focal depth of about 2 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 181 earthquakes, the strongest at M4.1.

Details

ID
f71060ead7156c96f4b5800ced12b6a1c11c4946
Magnitude
M1.1
Depth
2.3 km
UTC time
2026-08-21 18:37:56 UTC
Local time
—
Country
United States
State
California
City
Duarte
County
Los Angeles County
Source
usgs
Coordinates
34.16783, -117.93000
Temperature
34.8°C

Depth profile

Depth profile Depth: 2.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.3 km
Shallow
2.3 km
2.3 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: 240 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 320 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 398 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 416 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 437 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 487 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
    32.7 kmStraight-line distance
  • Hollywood Burbank/Bob Hope AirportUnited States · BUR · KBUR
    39.6 kmStraight-line distance
  • Long Beach International AirportUnited States · LGB · KLGB
    44.0 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-15

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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