The U.S. Geological Survey initially reported that the natural disaster registered a 5.1 magnitude, before revising it down to 4.4 and later 4.1.
According to the United States Geological Survey the quake occurred at 4:47 p.m. Thursday, roughly seven miles northeast of Dover Air Force Base in the Delaware Bay. Thousands of people, including some on the fringes of New England, reported sensing the quake. Anyone sustaining serious damage of an emergency nature to a building or home should call their local 911 center to report it. Early news about the temblor measured the severity higher, with initial reports of 4.4 and 5.1.
DE 105.9's Rob Petree hit the streets of Dover for reaction from residents on what they experienced during the quake, which one man said was deafening.
There is no immediate word of any damage associated with the seismic incident.
Paul Caruso is a geophysicist with the USGS's natural disaster information center in Colorado.
It was followed up ten minutes later by a less powerful 5.0 aftershock in the same area, the survey said.
Caruso said he didn't expect any significant damage, given the small size of the quake.
For some area residents, the event stirred memories of a magnitude 5.8 natural disaster - centered in Louisa County, Virginia - that rocked much of the eastern United States in August 2011. That quake, which centered in Mineral, Va., measured 5.8. It was later downgraded again to 4.1magnitude.
Casey sent a text about 4:48 p.m.to his wife, Kathryn, who was in Westbury, and she responded with an "OMG!" Many reports came in along communities along the Delaware River in the southern part of the state including Trenton and Camden. The largest recorded natural disaster occurred in 1979 with a magnitude 3.3 in Dover.
Social media was abuzz even before the official word from scientists. That event took place in 1871 and was an estimated magnitude 4.1.
USGS revised the magnitude from 5.1 to a 4.1 quake.
Intensity levels here have reached 3 and above at least 10 times since 1983, when an intensity 5 quake (magnitude 2.9) shook Wilmington's Forty Acres neighborhood.
FOX 5 viewers have reported feeling the natural disaster in the District, Maryland, including Prince George's County and Montgomery County, and in Virginia, including Prince William County and Fairfax County.