“Mystery Quakes May Be Among World’s Longest-Lived Aftershocks”

Central Washington State isn’t known for being very seismically active, especially compared with the western part of the state, where earthquakes are fairly common. But the town of Entiat, about 3 hours east of Seattle, is an exception: The area recorded hundreds of earthquakes over the past century. A group of scientists investigating this unusual and long-lasting activity recently reported that the quakes may actually be aftershocks of a larger earthquake, one that occurred 145 years ago.

Read the rest of my story for Eos here.