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M1.8 Depth: 20.7 km

M1.8 Earthquake near 6 km ESE of Mossyrock, Washington (United States)

UTC time: 2025-10-28 04:34:02 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near 6 km ESE of Mossyrock, Washington (United States) on October 28, 2025 at 04:34 UTC. The hypocenter lay relatively close to the surface at around 21 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: 185 earthquakes were recorded in the past 24 hours, the strongest reaching M5.0.

Details

Magnitude
M1.8
Depth
20.7 km
UTC time
2025-10-28 04:34:02 UTC
Local time
—
Country
United States
City
Washington
Source
usgs
Coordinates
46.50633, -122.40217
Temperature
4.7°C

Map

Depth profile

Depth profile Depth: 20.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20.7 km
Shallow
20.7 km
20.7 km — deeper than the regional average (15.5 km)
Regional average: 15.5 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: 38 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Rainier
    Distance: 62 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • West Crater
    Distance: 74 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·United States
  • Adams
    Distance: 78 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • Indian Heaven
    Distance: 78 km ·Volcanic field ·Elevation: 1'806 m ·Last eruption: -6250 ·United States
  • Hood
    Distance: 137 km ·Stratovolcano ·Elevation: 3'426 m ·Last eruption: 1866 ·United States

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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