Southern Mexico was rattled by a powerful earthquake on Tuesday morning that triggered a tsunami alert for Pacific coastlines along with Central America.

The US Geological Survey (USGS) said the quake had a preliminary magnitude of 7.4 and struck around 11:29 a.m. ET, 7 miles west of Santa María Zapotitlán

The temblor had a depth of about 20 miles and was centered along with the Pacific coast of Oaxaca state.near the resort of Huatulco. The quake was felt in Guatemala and throughout south and central Mexico.

The Pacific Tsunami Warning Center (PTWC) said that “hazardous” tsunami waves from the quake are possible within 620 miles of the epicenter, along the Pacific coasts of Mexico, Guatemala, El Salvador, and Honduras.

Tsunami waves of up to 9 feet are possible along some coasts of Mexico, while tsunami waves of up to 3 feet are possible for Ecuador. In the rest of Central America, tsunami waves of up to a foot were possible along the Pacific Coast.