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United States · Washington

M1.7 Earthquake near King County, Washington (United States)

UTC time: 2026-09-28 10:47:48 UTC Local time: —

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About this earthquake

A magnitude M1.7 earthquake was recorded near King County, Washington (United States) on September 28, 2026 at 10:47 UTC. With a focal depth of about 22 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 160 earthquakes were recorded in the past 24 hours, the strongest reaching M3.5.

Details

ID
165abd233d8683a45cf89809fbacd7451a529c30
Magnitude
M1.7
Depth
21.6 km
UTC time
2026-09-28 10:47:48 UTC
Local time
—
Country
United States
State
Washington
City
King County
County
King County
Source
usgs
Coordinates
47.44767, -121.77617
Temperature
7.1°C

Depth profile

Depth profile Depth: 21.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 21.6 km
Shallow
21.6 km
21.6 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

  • Rainier
    Distance: 66 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • Glacier Peak
    Distance: 89 km ·Stratovolcano ·Elevation: 3'213 m ·Last eruption: 1700 ·United States
  • Adams
    Distance: 140 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • St. Helens
    Distance: 142 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Baker
    Distance: 148 km ·Stratovolcano(es) ·Elevation: 3'285 m ·Last eruption: 1880 ·United States
  • Indian Heaven
    Distance: 169 km ·Volcanic field ·Elevation: 1'806 m ·Last eruption: -6250 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Seattle–Tacoma International AirportUnited States · SEA · KSEA
    40.2 kmStraight-line distance
  • King County International Airport - Boeing FieldUnited States · BFI · KBFI
    40.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-28

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Washington

Context for this earthquake

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 88 Catalogue entries

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

Open seismic profile

Historic earthquake map · United States

Open history map
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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