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United States · California

M1.2 Earthquake near San Diego County, California (United States)

UTC time: 2026-10-21 18:27:55 UTC Local time: —
Magnitude
M1.2
Depth
17.7 km
Source
SCEDC

California · San Diego County

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About this earthquake

A magnitude M1.2 earthquake was recorded near San Diego County, California (United States) on October 21, 2026 at 18:27 UTC. With a focal depth of about 18 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 SCEDC and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 125 earthquakes, the strongest at M3.7.

Details

ID
897e72a940407c67e0d8973064fe7a0d4b710638
Magnitude
M1.2
Depth
17.7 km
UTC time
2026-10-21 18:27:55 UTC
Local time
—
Country
United States
State
California
City
San Diego County
County
San Diego County
Source
scedc
Coordinates
33.33583, -117.59534
Temperature
23.7°C

Depth profile

Depth profile Depth: 17.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 17.7 km
Shallow
17.7 km
17.7 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: 185 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 410 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 418 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • San Luis, Isla
    Distance: 480 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Mammoth Mountain
    Distance: 495 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • McClellan-Palomar AirportUnited States · CLD · KCRQ
    37.3 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    45.5 kmStraight-line distance

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

Nuclear power plants

  • San Onofre nuclear power plantUnited StatesPermanently shut downReactor units at site: 3
    5.3 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

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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