4.0 Magnitude Aftershock Rattles New York City Area

The New York Times reports:

Aftershocks continued throughout the day Friday, including one that measured 4.0 just before 6 p.m. and that was felt widely across New York and Jersey. Aftershocks would likely “continue for several days and even a week,” said Kishor S. Jaiswal, a research structural engineer with the United States Geological Survey. There is also a small chance that an earthquake of similar or even larger magnitude could occur during such a sequence, he said.

The earthquakes also revealed apparent shortcomings in New York’s emergency notification system, coming after the Adams administration has been criticized for a delayed response to floods and wildfire smoke. On Friday, beeping text alerts warning residents to stay indoors were received a half-hour or more after the earthquake hit. (In earthquake-prone areas like California and Japan, a network of seismic sensors detect shaking, so alerts can arrive seconds before the quake.)

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