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Magnitude 4.3 Earthquake Shakes Seattle Area

Thousands reported weak to light shaking, and the USGS said there was about a 1% chance of a stronger aftershock.

  • On Tuesday, a magnitude 4.2 earthquake struck near Wauna, Washington, shaking the Puget Sound region at approximately 2:05 p.m. local time, according to the U.S. Geological Survey.
  • While the probability of a major earthquake remains low, seismologists predict a 38% chance of another magnitude 3.0 or greater aftershock occurring within the next week.
  • More than 2,800 people reported feeling the quake to the USGS, with a majority of reports labeling the intensity as weak or light.
  • Sound Transit directed 1 Line trains to share one track at Angle Lake Station due to seismic activity, while the Pierce County Department of Emergency Management reported no immediate injuries or damage.
  • Pacific Northwest Seismic Network director Harold Tobin noted the event reminds residents they 'live in earthquake country' in the Pacific Northwest, underscoring the region's persistent seismic reality.
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Komo News broke the news in Seattle, United States on Tuesday, September 29, 2026.
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