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M2.2 Depth: 18.5 km

M2.2 Earthquake near 18 km WNW of Petrolia, CA (United States)

UTC time: 2025-08-04 08:36:54 UTC Local time: —

About this earthquake

A magnitude M2.2 earthquake was recorded near 18 km WNW of Petrolia, CA (United States) on August 4, 2025 at 08:36 UTC. The hypocenter lay relatively close to the surface at around 18 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 USGS. United States: over the past 24 hours, QuakeMap24 logged 241 earthquakes, the strongest at M4.1.

Details

Magnitude
M2.2
Depth
18.5 km
UTC time
2025-08-04 08:36:54 UTC
Local time
—
Country
United States
Source
usgs
Coordinates
40.37733, -124.48267
Temperature
14.1°C

Map

Depth profile

Depth profile Depth: 18.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 18.5 km
Shallow
18.5 km
18.5 km — deeper than 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

  • Clear Lake Volcanic Field
    Distance: 214 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 224 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 252 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Escanaba Segment
    Distance: 263 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Medicine Lake
    Distance: 281 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Jackson Segment
    Distance: 291 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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