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M1.9 Depth: 13.7 km

M1.9 Earthquake near 6 km W of Petrolia, CA (United States)

UTC time: 2025-09-18 20:59:52 UTC Local time: —

About this earthquake

A magnitude M1.9 earthquake was recorded near 6 km W of Petrolia, CA (United States) on September 18, 2025 at 20:59 UTC. With a focal depth of about 14 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 176 earthquakes, the strongest at M3.7.

Details

Magnitude
M1.9
Depth
13.7 km
UTC time
2025-09-18 20:59:52 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
40.32100, -124.35467
Temperature
15.2°C

Map

Depth profile

Depth profile Depth: 13.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.7 km
Shallow
13.7 km
13.7 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: 202 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 218 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 242 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Escanaba Segment
    Distance: 275 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Medicine Lake
    Distance: 275 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Jackson Segment
    Distance: 304 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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