Tillamook County Emergency Manager Gordon McCraw recently spoke with staff at the state geology department who explained recent quakes, which were reportedly caused by a slow slip event.
Slow slip events have a cycle of 14-16 months, during which time small earthquake activity typically increases. A series of small quakes has led to elevated concern in some communities. On the coast, the specter of an earthquake-caused tsunami looms large.
McCraw said Department of Oregon Geology and Mineral Industries staff believe the risk of a Cascadia Subduction event (the Big One) remains minimal at this time given the hundreds of years of slow slip events in the region.