A preliminary magnitude-7.6 (downgraded from 7.8) earthquake has struck north of Honduras, according to the USGS. The earthquake struck at 9:51 p.m. ET on Tuesday evening, and was located 36km ENE of Great Swan Island, Honduras.
The earthquake was reportedly at a depth of 33km. (source)
According to the Pacific Tsunami Warning Center, tsunami waves are possible within 1000km of the epicenter along the coasts of Cayman Islands, Jamaica, Mexico, Honduras, Cuba, Belize, San Andres Provid, Costa Rica, Panama, Nicaragua and Guatemala.
The National Tsunami Warning Center says
There is no tsunami danger for the U.S. east coast, the Gulf of Mexico states, or the eastern coast of Canada.
According to the USGS PAGER service, there is a 34% chance of fatalities resulting from the earthquake.
The Pacific Tsunami Warning Center says that the tsunami threat from the earthquake has passed and that there is no further threat, but to remain observant and exercise normal caution near the sea.
They have also confirmed that tsunami waves were confirmed in both Belize and The Cayman Islands.