Free Press this morning reporting on earthquake theory:
BIG BOOM THEORY
Wis. noises linked to minor quake
An official for an eastern Wisconsin city plagued this week by a series of unexplained booming sounds says the mystery can be attributed to an early-morning earthquake. Clintonville City Administrator Lisa Kuss told the community Thursday “the mystery is solved.” She says the rumbling can be explained by a 1.5-magnitude earthquake that struck Tuesday and was confirmed by federal geologists Thursday. Earthquakes can generate seismic energy that moves through rock at thousands of miles per hour, producing a sonic boom when the waves come to the surface, geophysicist Paul Caruso said. Local residents have reported late-night disturbances since Sunday, including shaking ground and loud booms that sound like thunder or fireworks.
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