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United States · Washington

M1.6 Earthquake near Lewis County, Washington (United States)

UTC time: 2026-08-20 03:52:00 UTC Local time: —

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About this earthquake

A magnitude M1.6 earthquake was recorded near Lewis County, Washington (United States) on August 20, 2026 at 03:52 UTC. With a focal depth of about 22 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 event was recorded by USGS. United States: 184 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

ID
6b46bae66cd1adc766a3b24252a0d0d27d4efc9b
Magnitude
M1.6
Depth
21.9 km
UTC time
2026-08-20 03:52:00 UTC
Local time
—
Country
United States
State
Washington
City
Lewis County
County
Lewis County
Source
usgs
Coordinates
46.47066, -122.41734
Temperature
22.4°C

Depth profile

Depth profile Depth: 21.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 21.9 km
Shallow
21.9 km
21.9 km — deeper 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

  • St. Helens
    Distance: 35 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Rainier
    Distance: 66 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • West Crater
    Distance: 71 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·United States
  • Indian Heaven
    Distance: 76 km ·Volcanic field ·Elevation: 1'806 m ·Last eruption: -6250 ·United States
  • Adams
    Distance: 77 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • Hood
    Distance: 134 km ·Stratovolcano ·Elevation: 3'426 m ·Last eruption: 1866 ·United States

Washington

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 89 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

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Historic earthquake map · United States

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Country statistics · United States

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