I would guess, although they're an island, that it would be similar to if the Tri-Cities had an earthquake, and why there wouldn't necessarily have issues in Spokane or Pendleton. Distance and location of the earthquake.
I was totally looking at Puerto Rico, thinking it was Haiti/DR. It really blew my mind that an island that small would feel an earthquake on only one end. Let the merciless mocking commence...
DR is a wealthy country, owned largely by foreign investors. Haiti is a diseased slum.
With regard to the Dominican Republic earthquake, presidential spokesperson Rafael Nunes said it felt "very strong". Unlike Haiti, there is no damage reported thus far in the Dominican Republic.