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M1.1 Depth: 19.6 km

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

UTC time: 2026-03-12 17:47:57 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near Mason County, Washington (United States) on March 12, 2026 at 17:47 UTC. The hypocenter lay relatively close to the surface at around 20 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: 175 earthquakes were recorded in the past 24 hours, the strongest reaching M3.0.

Map

Depth profile

Depth profile Depth: 19.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.6 km
Shallow
19.6 km
19.6 km — deeper than the regional average (15.8 km)
Regional average: 15.8 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: 110 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • Glacier Peak
    Distance: 151 km ·Stratovolcano ·Elevation: 3'213 m ·Last eruption: 1700 ·United States
  • St. Helens
    Distance: 151 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Baker
    Distance: 166 km ·Stratovolcano(es) ·Elevation: 3'285 m ·Last eruption: 1880 ·United States
  • Adams
    Distance: 176 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • West Crater
    Distance: 187 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·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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