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United States · Washington

M1.1 Earthquake near Lewis County, Washington (United States)

UTC time: 2026-09-20 22:56:21 UTC Local time: —

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About this earthquake

A magnitude M1.1 earthquake was recorded near Lewis County, Washington (United States) on September 20, 2026 at 22:56 UTC. With a focal depth of about 8 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: 182 earthquakes were recorded in the past 24 hours, the strongest reaching M5.3.

Details

ID
23423b1563eda2de5b3b655b4d251f9048bc4a35
Magnitude
M1.1
Depth
8.1 km
UTC time
2026-09-20 22:56:21 UTC
Local time
—
Country
United States
State
Washington
City
Lewis County
County
Lewis County
Source
usgs
Coordinates
46.51950, -122.32200
Temperature
18.0°C

Depth profile

Depth profile Depth: 8.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.1 km
Shallow
8.1 km
8.1 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

  • St. Helens
    Distance: 37 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Rainier
    Distance: 57 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • Adams
    Distance: 73 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • West Crater
    Distance: 74 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
  • Hood
    Distance: 136 km ·Stratovolcano ·Elevation: 3'426 m ·Last eruption: 1866 ·United States

Washington

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 2.0 · 85 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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