Tsunamis are more of a reality in some places than in others. I have close friends in Maui, they tell me their house has been hit by waves three times since the 1960's, once badly. I imagine there are lots of stories more serious than that in various parts of the Pacific and Indian Ocean.
This part of the world is older, less tectonically active. Still, there are plate movements even here in the upper Caribbean.* I understand Puerto Rico has or had some form of Tsunami monitoring network and response plan.** They had a bad one in the USVI well before that with runups on the order of 12 m. Finally, there were two in 1946 that hit the Dominican Republic killing over 2000. I understand from the recent paper ***, that a 2 m tsunami is bad enough to cause widespread destruction and loss of life in coastal areas. It is likely hurricanes and earthquakes in the region have caused greater losses but sometimes we forget about tsunamis in this area and their wider zone of impact so it bears noting.
So, they have Tsunamis in this area, they are just rare. Understand this quake was the worse that part of Haiti had seen in 200 years. I would stay plugged into news and watches, although the odds seem pretty remote. Still, over time they will happen.
* Something about the geology and this earthquake
http://www.miamiherald.com/news/miam...y/1421908.html
** Tsunami Monitoring and Response in Puerto Rico
http://poseidon.uprm.edu/
Runup in a long past serious Tsunami in PR
http://www.usc.edu/dept/tsunamis/car...18prindex.html
*** This is an interesting recent paper from authorities on the risk posed by the "forgotten danger" as they put it.
http://www.ioc-tsunami.org/files/CAR...Risk110506.pdf