Yeah, I remember reading a book some years back that stated the earthquake of 1811/12 was so strong, it rang church bells in DC.
http://en.wikipedia.org/wiki/1812_New_Madrid_earthquake
Some sections of the Mississippi River appeared to run backward for a short time.[2] Sand blows were common throughout the area, and can still be seen from the air in cultivated fields. The shockwaves propagated efficiently through midwestern bedrock. Residents as far away as Pittsburgh and Norfolk were awakened by intense shaking.[4] Church bells were reported to ring as far as Boston, Massachusetts and York, Ontario (now Toronto) and sidewalks were reported to have been cracked and broken in Washington, D.C.[5] There were also reports of toppled chimneys in Maine.[citation needed]
Eliza Bryan[6] in New Madrid, Territory of Missouri, wrote the following eyewitness account in March, 1812.
On the 16th of December, 1811, about two o’clock, a.m., we were visited by a violent shock of an earthquake, accompanied by a very awful noise resembling loud but distant thunder, but more hoarse and vibrating, which was followed in a few minutes by the complete saturation of the atmosphere, with sulphurious vapor, causing total darkness. The screams of the affrighted inhabitants running to and fro, not knowing where to go, or what to do — the cries of the fowls and beasts of every species — the cracking of trees falling, and the roaring of the Mississippi — the current of which was retrograde for a few minutes, owing as is supposed, to an irruption in its bed — formed a scene truly horrible.
The Shaker diarist Samuel Swan McClelland described the effects of the earthquake on the Shaker settlement at West Union (Busro), Indiana, where the earthquakes contributed to the temporary abandonment of the westernmost Shaker community.[7]