The 1946 Dominican Republic earthquake occurred on August 4 at 17:51 UTC near Samaná, Dominican Republic.

[4] An aftershock occurred four days later on August 8 at 13:28 UTC with a moment magnitude of 7.0.

[5] A tsunami was generated by the initial earthquake and caused widespread devastation across Hispaniola.

The tsunami was observed in much of the Caribbean and the northwestern Atlantic Ocean.

[6][7][8][9] A small tsunami was also recorded by tide gauges at San Juan in Puerto Rico, Bermuda and in the United States at Daytona Beach, Florida and Atlantic City, New Jersey.