Earthquake or Nuclear blast in Virginia

Nuclear explosion in Virginia or an earthquake
Nuclear explosion or an earthquake? you tell me...The jpg shows the Washington nuclear detonation in green compared to an earthquake in black.

An earthquake has never been felt in Washing DC before. Denver is familiar with earthquakes. Is it just a coincidence that ABC news anchors warned of possible terrorist attacks against the United States before the 10th anniversary of 9/11?
The U.S. Geological Survey said the Virginia earthquake was 3.7 miles deep. Shaking was felt at the White House and all over the East Coast, as far south as Chapel Hill, N.C. Parts of the Pentagon, White House and Capitol were evacuated. The quake was in Mineral, Va., in Louisa County.

The magnitude 5.3 Colorado quake hit nine miles southwest of Trinidad, or 180 miles south of Denver, according to the U.S. Geological Survey’s National Earthquake Information Center in Golden. It had an estimated depth of 2.5 miles (4 kilometers) and was felt in a relatively large area of southern Colorado and northern New Mexico.

How do these earthquakes compare to a nuclear detonation…  A 6.0 magnitude earthquake is equivalent to the nuclear detonation by the U.S. against Hiroshima, Japan.