YAKIMA, Wash. - A swarm of earthquakes struck the Yakima area on Friday, according to the U.S. Geological Survey.
Ten earthquakes between magnitudes 0.5 and 2.6 were recorded in north Yakima near the Naches River.
“In Eastern Washington, these kinds of little clusters or swarms are pretty typical,” said Joan Gomberg, a USGS research geophysicist.
She said events like this typically involve a larger earthquake followed by a series of smaller earthquakes called aftershocks. In this case, however, there is no large event – just a series of small earthquake called a “swarm.”
Events like this can go on for weeks or even months, Domberg said. As for the cause, it would only be speculation, but she said there are likely several factors involved.
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