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United States · California

M1.3 Earthquake near Garden Grove, California (United States)

UTC time: 2026-08-21 05:46:40 UTC Local time: —

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About this earthquake

A magnitude M1.3 earthquake was recorded near Garden Grove, California (United States) on August 21, 2026 at 05:46 UTC. The hypocenter lay relatively close to the surface at around 10 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 SCEDC. United States: over the past 24 hours, QuakeMap24 logged 186 earthquakes, the strongest at M4.1.

Details

ID
5dfce66b832a56f573d630cf18de65b647e344d5
Magnitude
M1.3
Depth
9.5 km
UTC time
2026-08-21 05:46:40 UTC
Local time
—
Country
United States
State
California
City
Garden Grove
County
Orange County
Source
scedc
Coordinates
33.77950, -117.92834
Temperature
22.0°C

Depth profile

Depth profile Depth: 9.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 9.5 km
Shallow
9.5 km
9.5 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: 224 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 363 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 440 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 458 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Pinacate
    Distance: 466 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mono Lake Volcanic Field
    Distance: 480 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

  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    12.8 kmStraight-line distance
  • Long Beach International AirportUnited States · LGB · KLGB
    20.9 kmStraight-line distance
  • Jack Northrop Field Hawthorne Municipal AirportUnited States · HHR · KHHR
    40.8 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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