SANTIAGO, Chile -- The U.S. Geological Survey says an 8.3-magnitude earthquake has struck southern Chile. A tsunami warning was also issued. The quake hit 197 miles southwest of the capital, Santiago, and at a depth of 36.9 miles at 1:34 a.m. EST. The Pacific Tsunami Warning Center issued a warning for Chile and Peru, and a less-urgent tsunami watch for Ecuador. The center said an earthquake of this size has the potential to generate a destructive tsunami that can strike coastlines near the epicenter within minutes and more distant coastlines within hours." The U.S. west coast tsunami warning center said it did not expect a tsunami along the west of the U.S. or Canada but was continuing to monitor the situation.