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M0.4 Depth: 1.4 km

M0.4 Earthquake near Lewis County, Washington (United States)

UTC time: 2026-08-20 14:04:22 UTC Local time: —

About this earthquake

A magnitude M0.4 earthquake was recorded near Lewis County, Washington (United States) on August 20, 2026 at 14:04 UTC. The hypocenter lay relatively close to the surface at around 1 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: 225 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Map

Depth profile

Depth profile Depth: 1.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 1.4 km
Shallow
1.4 km
1.4 km — shallower 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

  • Rainier
    Distance: 27 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • Adams
    Distance: 52 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • St. Helens
    Distance: 54 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Indian Heaven
    Distance: 76 km ·Volcanic field ·Elevation: 1'806 m ·Last eruption: -6250 ·United States
  • West Crater
    Distance: 84 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·United States
  • Hood
    Distance: 138 km ·Stratovolcano ·Elevation: 3'426 m ·Last eruption: 1866 ·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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