What Is An Earthquake?

An earthquake is when the ground suddenly shakes because the Earth’s crust (the outer layer) moves. This happens when rocks deep underground break or slip along cracks called faults, releasing built-up energy. That energy travels through the ground as waves, and that’s what we feel as shaking on the surface.

 

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How Common Are Earthquakes In New Jersey?

Earthquakes in New Jersey are not very common, but they do happen once in a while. Most are small and barely felt, though every few decades, a stronger one might shake the area a bit. New Jersey isn’t near a major fault line like California, so big earthquakes are rare, but the ground can still move slightly because of old, hidden cracks in the Earth’s crust.

 

 

New Jersey Felt an Earthquake on Monday, October 20, 2025

Officials confirm that New Jersey felt an earthquake on Monday. According to a Patch report, "A 1.6 magnitude earthquake rattled a Hunterdon County town on Monday afternoon. The United States Geological Survey(USGS) said the quake struck around 2:46 p.m. about 2 km east-northeast of Califon."

 

 

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According to officials, "The last time an earthquake was recorded in the Hunterdon County area was on Aug. 12, when a 1.2 magnitude earthquake was reported about 6 kilometers northeast of Lebanon."

 

Did you feel anything on Monday?

 

 

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KEEP READING: Get answers to 51 of the most frequently asked weather questions...

 

LOOK: The most expensive weather and climate disasters in recent decades

Stacker ranked the most expensive climate disasters by the billions since 1980 by the total cost of all damages, adjusted for inflation, based on 2021 data from the National Oceanic and Atmospheric Administration (NOAA). The list starts with Hurricane Sally, which caused $7.3 billion in damages in 2020, and ends with a devastating 2005 hurricane that caused $170 billion in damage and killed at least 1,833 people. Keep reading to discover the 50 of the most expensive climate disasters in recent decades in the U.S.

Gallery Credit: KATELYN LEBOFF

 

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