From three seismic stations in 1963 to now more than 500 — see how...

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Explore the crucial role of the Garrison Hill seismic station. Doug Gibbons, a field technician and seismology lab coordinator for the Pacific Northwest Seismic Network, shares how it not only records local earthquake data but also transmits signals from the STAR station on Mount Rainier to the University of Washington's PNSN server. 🎥 Liesbeth Powers | The News Tribune

Harold Tobin with the Pacific Northwest Seismic Network talks about the last time Washington's coast had a tsunami advisory | KOMO News

#45YearsAgo at #MountStHelens, Mar 22, 1980: The Pacific Northwest Seismic Network seismology lab registers another large earthquake at 2:23 PM. It’s a magnitude 4.2, about a mile deep, and smaller quakes persist. Seismologists conclude that this was not an earthquake fore/aftershock sequence, but an earthquake swarm with many separate events. A field trip is arranged for the following day to collect records from the 5-day recording instruments. USGS scientist C. Dan Miller talks about his 18-ho