A number of us at the Pacific Northwest Seismic Network (PNSN) have been puzzled by what seems to be a recent lack of significant earthquakes in the region. Although the Pacific Northwest (PNW) is not as seismically active as other plate boundary parts of the world, it has had its share of destructive earthquakes. Since the last eruption of Mount St. Helens (MSH) ended in early 2008, there have been no damaging earthquakes in the network’s authoritative region (Washington and Oregon). With many new high‐quality seismic stations, the introduction of a more advanced automatic detection and processing system, and a...

You do not currently have access to this article.