A magnitude 5.3 earthquake occurred at 18:27:29 UTC on 16 October 2021, 75.0 km (46.6 mi) SSW of George Town, Cayman Islands; 80.9 km (50.3 mi) SSW of West Bay, Cayman Islands and 81.1 km (50.4 mi) SW of Bodden Town, Cayman Islands. Initial estimates from the United States Geological Survey (USGS) located the epicentre of the event at 18.701°N, 81.727°W, and at a depth of 10.0 km.