Pictured: A USGS map displays the epicenter of the January 15, 2019 earthquake. View here
Earthquakes off of the U.S. East Coast are relatively rare. The Jan. 15 event is the only earthquake to occur off the coast of the Mid-Atlantic for the past year. Ocean earthquakes can raise concerns for tsunamis which are large ocean waves caused by earthquakes or landslides on the seafloor. There was no tsunami generated from the earthquake.
At a 4.6-magnitude, the Jan. 15 earthquake is considered small to moderate, with a low likelihood of casualties and damage. MARACOOS observing assets, including tidal gauges, wave buoys, and High-Frequency Radars, did not record any ocean effects of the earthquake.