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City to Participate in ShakeAlert Earthquake Early Warning System

Dec 31, 2019
The City of Sedro-Woolley has agreed to host a seismic sensor for the "ShakeAlert" program being implemented by the Pacific Northwest Seismic Network.

The Pacific Northwest Seismic Network at the University of Washington, and University of
Oregon, are developing and implementing the ShakeAlert earthquake early warning system to
immediately warn the public when a damaging earthquake starts to occur. The ShakeAlert system
rapidly detects a strong earthquake using nearby sensors, determines the magnitude and
location, and immediately sends out an alert to the public before the destructive shaking has time
to reach them. This provides up to tens of seconds of warning before intense shaking hits, giving
people crucial time to move out of harm's way and save lives.

To reliably distribute warnings for all parts of the Pacific Northwest with high earthquake hazards,
it is important to have a robustly operating, dense network of seismic stations capable of quickly
providing data that can be used in ShakeAlert. We are looking for locations to install earthquake
monitoring stations that have reliable electrical connections and fast network connectivity.

In addition to contributing to ShakeAlert, the new stations will also support the mission of the
PNSN, to operate a reliable, modern, system for producing earthquake information for the
benefit of public safety, emergency response, and loss mitigation.

See this flyer to learn more about the PNSN, or visit their website at