Back to map
M1.8 Depth: 19.4 km

M1.8 Earthquake near 14 km WNW of Petrolia, CA (United States)

UTC time: 2025-09-16 04:33:11 UTC Local time: —

About this earthquake

On September 16, 2025 at 04:33 UTC, a magnitude M1.8 earthquake occurred near 14 km WNW of Petrolia, CA (United States). The hypocenter lay relatively close to the surface at around 19 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: 163 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

Magnitude
M1.8
Depth
19.4 km
UTC time
2025-09-16 04:33:11 UTC
Local time
—
Country
United States
Source
usgs
Coordinates
40.33617, -124.44566
Temperature
14.6°C

Map

Depth profile

Depth profile Depth: 19.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.4 km
Shallow
19.4 km
19.4 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: 209 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: 249 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Escanaba Segment
    Distance: 267 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: 297 km ·Fissure vent(s) ·Elevation: -3'100 m ·United States

Historic earthquake map · United States

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

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

Share