A tsunami threat has been issued for Caribbean islands after a magnitude 7.7 earthquake strikes off Jamaica
A tsunami of 0.4 feet was recorded in the Cayman Islands at George Town, but no tsunami was observed at Port Royal, Jamaica, or Puerto Plata, Dominican Republic. A tsunami threat alert was lifted Tuesday afternoon, a few hours after the quake.Alec Pultr, who lives in Ogier, Grand Cayman, said it wasn't the first earthquake he's experienced but it was the biggest"by far.""We were simply working and things started to sway," he told CNN.
— JB January 28, 2020 The earthquake appears to have been a"strike-slip earthquake," in which tectonic plates slide against each other. This limits the threat of a devastating tsunami, which are more associated with"thrust earthquakes," where a portion of the earth is thrust upward and causes the water to push up and outward, creating the tsunami.The United States Geological Survey said the earthquake had a preliminary depth of 10 kilometers .
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