6.5-magnitude quake shakes central Chile SANTIAGO, Chile - A strong and prolonged earthquake of magnitude 6.5 has shaken central Chile. Authorities have ordered a preventative evacuation of parts of the coastline. The U.S. Geological Survey says the quake's epicenter was 30 miles northeast of Valparaiso, Chile, and it had a depth of 15.5 miles. It struck at just before midnight local time. Residents say the quake was felt for almost a minute. Authorities say the evacuation was ordered from the city of Constitucion to Tongoy. Chile's oceanography service discounted the possibility of a tsunami.