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M1.9 Depth: 19.6 km

M1.9 Earthquake near 22 km W of Petrolia, CA (United States)

UTC time: 2025-09-19 10:40:35 UTC Local time: —

About this earthquake

A magnitude M1.9 earthquake was recorded near 22 km W of Petrolia, CA (United States) on September 19, 2025 at 10:40 UTC. The hypocenter lay relatively close to the surface at around 20 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 180 earthquakes were recorded in the past 24 hours, the strongest reaching M3.5.

Details

Magnitude
M1.9
Depth
19.6 km
UTC time
2025-09-19 10:40:35 UTC
Local time
—
Country
United States
Source
usgs
Coordinates
40.29850, -124.53850
Temperature
14.9°C

Map

Depth profile

Depth profile Depth: 19.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.6 km
Shallow
19.6 km
19.6 km — deeper 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: 212 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 233 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 258 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Escanaba Segment
    Distance: 261 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Medicine Lake
    Distance: 290 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Jackson Segment
    Distance: 294 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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