Estimated magnitude 5.1 earthquake
Affected countries: British Virgin Islands, Saint Martin, Sint Maarten, Montserrat, Puerto Rico, Saint Kitts and Nevis, U.S. Virgin Islands, Caribbean Netherlands, Saint Barthélemy, Antigua and Barbuda, and Anguilla
33 miles from Saint Martin · 3:28 PM

Didn't feel it.

It appears the far end of Simpson Bay and Beacon Hill did not feel it. Folks at BSV, Mary's Boon, and the Toad did not feel it. Someone in Pelican Key did and Pburg area did. Strange.

Correct but felt the last one sometime ago .

I certainly felt it in Colombier. It was a loud and long one, too.

Sylvain in Orange Grove felt it.

I saw on disaster alert that it was 6.6 on Richter scale. About 200 miles north east of St. Martin/St Maarten. So that is why places on the east and North east felt and those in south west did not. A tsunami watch has been posted. Not a warning! Just a possibility

it was 6.6 at 200 miles to the NNE and 10KM down. By the time it arrived in St. Martin it was far less powerful and most would not have felt it at all. The BVI news had a laughable headline "6.6 Earthquake hits BVI". Had it actually hit with that intensity, it would have caused structural damage to most of the BVI buildings and infrastructure.

Another one in the same area at 5.0 16 hrs ago!

Remember that the Richter scale is logarithmic, so an earthquake with 6 is 10x stronger than an earthquake with 5. Thus the smaller recent quake might not even have been felt in SXM.