Questions of the Week: The New Jersey / Philadelphia Earthquake (Rhetorical)

Telegraph.c0.UK - Haiti earthquake: history of natural disasters to hit the country

1946
The largest recorded earthquake in modern times on the island of Hispaniola was an 8.1-magnitude temblor that produced a tsunami and killed 1,790 people. Centered in the Dominican Republic, it extended into Haiti.

The Watchung Outliers include six areas of hilly rock outcropping of volcanic origin. All six are along the western edge of the Newark Basin adjacent to the Ramapo fault system.

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Submarines of any nation submerged in the Atlantic vicinity of Hispaniola are not indicated on the chart. Some readers may recall that back in January 22, 2007, M.E. related Submariners Are Not Superstitious: Submarine pyroclastic eruptions. As it happens, the first underwater eruption was not documented until 1990.
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Naval vessels certainly would have detected such seismic activity, whether sailors felt it or not. '
As seen in the leftmost chart (larger circles indicate larger quakes) what is common in the Pacific (see coast of South America) has been fairly uncommon in the Atlantic.
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Odds of a major quake in the NJ-PA area are considered low. Yet, can it really be dismissed?
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Submarines are always silent and strange.