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M2.5 Depth: 13.3 km

M2.5 Earthquake near 18 km SSE of Petrolia, CA (United States)

UTC time: 2025-08-12 18:09:09 UTC Local time: —

About this earthquake

On August 12, 2025 at 18:09 UTC, a magnitude M2.5 earthquake occurred near 18 km SSE of Petrolia, CA (United States). 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: 202 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

Magnitude
M2.5
Depth
13.3 km
UTC time
2025-08-12 18:09:09 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
40.20800, -124.13866
Temperature
21.1°C

Map

Depth profile

Depth profile Depth: 13.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.3 km
Shallow
13.3 km
13.3 km — close to the regional average (15.4 km)
Regional average: 15.4 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

  • Clear Lake Volcanic Field
    Distance: 181 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 211 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 225 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Medicine Lake
    Distance: 267 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Escanaba Segment
    Distance: 296 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Jackson Segment
    Distance: 326 km ·Fissure vent(s) ·Elevation: -3'100 m ·United States

Historic earthquake map · United States

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Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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