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United States · California

M2.2 Earthquake near Sonoma County, California (United States)

UTC time: 2026-09-29 21:47:04 UTC Local time: —

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About this earthquake

A magnitude M2.2 earthquake was recorded near Sonoma County, California (United States) on September 29, 2026 at 21:47 UTC. The hypocenter lay relatively close to the surface at around 4 km, increasing how strongly it was felt. 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: 190 earthquakes were recorded in the past 24 hours, the strongest reaching M4.2.

Details

ID
aad2ef9cf02c1d8129b4ba5173b3a05f45e57b4f
Magnitude
M2.2
Depth
4.3 km
UTC time
2026-09-29 21:47:04 UTC
Local time
—
Country
United States
State
California
City
Sonoma County
County
Sonoma County
Source
usgs
Coordinates
38.32333, -122.80083
Temperature
34.1°C

Depth profile

Depth profile Depth: 4.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4.3 km
Shallow
4.3 km
4.3 km — shallower than the regional average (15.2 km)
Regional average: 15.2 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: 72 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 265 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Mono Lake Volcanic Field
    Distance: 332 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 335 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mammoth Mountain
    Distance: 339 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Shasta
    Distance: 347 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Charles M. Schulz Sonoma County AirportUnited States · STS · KSTS
    20.7 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-01

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

California

Context for this earthquake

01 Oct 2025 – 01 Oct 2026 · M ≥ 2.0 · 2,444 Catalogue entries

Of 2,443 other entries for this area and period, 1,350 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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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.

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