On April 5, 2024, a magnitude 4.8 earthquake struck Tewksbury, New Jersey. The shaking took an estimated 42 million people from Virginia to Maine by surprise—the East Coast certainly isn’t known for its seismic activity. Now, researchers have finally figured out where this bizarre quake came from, and its origin wasn’t what they expected.
At first, the Ramapo Fault—the largest in the region—seemed like the obvious suspect, but the quake’s epicenter was located too far away and its orientation did not align with the earthquake signal. In a study published earlier this month in the journal JGR Solid Earth, researchers took a closer look. Their…
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