● Live · USGS
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Connecticut sits in the stable Northeast, where small earthquakes occur along old bedrock faults — notably the long-recognized swarms near Moodus. Events are usually tiny, but the cold, hard New England crust carries their shaking efficiently, so they're often felt and heard as a sharp boom.
This page tracks live USGS seismic activity across Connecticut — 6 cities including Bridgeport, New Haven, Stamford. The map and list above update continuously; open any city for a closer view with its own recent-quake and felt-radius detail.