President Michelle Bachelet declared a "state of catastrophe" in central Chile but said the government had not asked for assistance from other countries. If it does, President Barack Obama said, the United States "will be there." Around the world, leaders echoed his sentiment.
In Chile, newly built apartment buildings slumped and fell. Flames devoured a prison. Millions of people fled into streets darkened by the failure of power lines. The collapse of bridges tossed and crushed cars and trucks, and complicated efforts to reach quake-damaged areas by road.
At least 214 people were killed and 15 were missing as of Saturday evening, Bachelet said in a national address on television. While that remained the official estimate, Carmen Fernandez, head of the National Emergency Agency, said later: "We think the real figure tops 300. And we believe this will continue to grow."
Bachelet also said 1.5 million people had been affected by the quake, and officials in her administration said 500,000 homes were severely damaged.
In Talca, just 65 miles (105 kilometers) from the epicenter, people sleeping in bed suddenly felt like they were flying through major airplane turbulence as their belongings cascaded around them from the shuddering walls at 3:34 a.m. (1:34 a.m. EST, 0634 GMT).
A deafening roar rose from the convulsing earth as buildings groaned and clattered. The sound of screams was confused with the crash of plates and windows. Then the earth stilled, silence returned and a smell of damp dust rose in the streets, where stunned survivors took refuge.