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United States · Washington

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

UTC time: 2026-08-22 22:38:09 UTC Local time: —

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About this earthquake

A magnitude M0.4 earthquake was recorded near Pierce County, Washington (United States) on August 22, 2026 at 22:38 UTC. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 179 earthquakes, the strongest at M4.1.

Details

ID
e8b82d335cb21252ada1bdff8934e419a515aedc
Magnitude
M0.4
Depth
-0.2 km
UTC time
2026-08-22 22:38:09 UTC
Local time
—
Country
United States
State
Washington
City
Pierce County
County
Pierce County
Source
usgs
Coordinates
46.76450, -121.91800
Temperature
20.5°C

Depth profile

Depth profile Depth: -0.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km -0.2 km
Shallow
-0.2 km
0 km — shallower than the regional average (15.2 km)
Regional average: 15.2 km
Negative depth = focus above sea level (terrain elevation).
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: 16 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • St. Helens
    Distance: 66 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Adams
    Distance: 70 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • Indian Heaven
    Distance: 93 km ·Volcanic field ·Elevation: 1'806 m ·Last eruption: -6250 ·United States
  • West Crater
    Distance: 99 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·United States
  • Hood
    Distance: 156 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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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

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