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M1.6 Depth: 2.2 km

M1.6 Earthquake near 10 km SSW of Petrolia, CA (United States)

UTC time: 2025-09-16 01:26:40 UTC Local time: —

About this earthquake

A magnitude M1.6 earthquake was recorded near 10 km SSW of Petrolia, CA (United States) on September 16, 2025 at 01:26 UTC. The hypocenter lay relatively close to the surface at around 2 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 163 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

Magnitude
M1.6
Depth
2.2 km
UTC time
2025-09-16 01:26:40 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
40.24017, -124.30950
Temperature
15.3°C

Map

Depth profile

Depth profile Depth: 2.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.2 km
Shallow
2.2 km
2.2 km — shallower than 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: 193 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 220 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 239 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Medicine Lake
    Distance: 277 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Escanaba Segment
    Distance: 282 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Jackson Segment
    Distance: 313 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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