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M1.8 Depth: 8.8 km

M1.8 Earthquake near 9 km WSW of Petrolia, CA

UTC time: 2026-03-21 15:20:25 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near 9 km WSW of Petrolia, CA on March 21, 2026 at 15:20 UTC. With a focal depth of about 9 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.

Details

Magnitude
M1.8
Depth
8.8 km
UTC time
2026-03-21 15:20:25 UTC
Local time
—
Country
—
Source
usgs
Coordinates
40.30483, -124.38500
Temperature
11.6°C

Map

Depth profile

Depth profile Depth: 8.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.8 km
Shallow
8.8 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: 203 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Shasta
    Distance: 221 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 245 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Escanaba Segment
    Distance: 273 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Medicine Lake
    Distance: 279 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Jackson Segment
    Distance: 303 km ·Fissure vent(s) ·Elevation: -3'100 m ·United States

Stats (last 24h)

Global (24h)
487
Country (24h)
—
—
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