A major 7.6-magnitude earthquake shook central and southern Mexico on Tuesday, swaying buildings in Mexico City and sending frightened workers and residents into the streets. The U.S. Geological Survey (USGS) said the epicenter of the earthquake was in Guerrero state on Mexico's Pacific coast, about 190 kilometers east of the resort city of Acapulco. The Pacific Tsunami Warning Center said the inland earthquake would not generate a destructive, widespread tsunami, but there was the possibility of some local tsunami effects. President Felipe Calderon said there was no serious damage reported. The earthquake was felt in the capital, where telephone service was down and traffic was jammed. Mayor Marcelo Ebrard said the water system and other "strategic services" were not experiencing problems. The earthquake also was felt strongly in the southern state of Oaxaca. Local television there also reported no damage.