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M1.0 Depth: 2.8 km

M1.0 Earthquake near Sonoma County, California (United States)

UTC time: 2026-05-21 04:09:40 UTC Local time: —

About this earthquake

A magnitude M1.0 earthquake was recorded near Sonoma County, California (United States) on May 21, 2026 at 04:09 UTC. With a focal depth of about 3 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: 125 earthquakes were recorded in the past 24 hours, the strongest reaching M2.9.

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Depth profile

Depth profile Depth: 2.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.8 km
Shallow
2.8 km
2.8 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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: 17 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 217 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 293 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 328 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Mono Lake Volcanic Field
    Distance: 342 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Soda Lakes
    Distance: 348 km ·Maar(s) ·Elevation: 1'251 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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