"Tsunami waves" possible after El Salvador quake, warning center says
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A magnitude 7.4 quake struck late on Monday off the coast of El Salvador, and there was a risk of "hazardous tsunami waves", the Pacific Tsunami Warning Center said in a revised alert.
The quake struck 66 miles (106 km) south-southeast of the city of Usulutan, the U.S. Geological Survey said.
