 Kansas, Texas, and Louisiana are also hot today. More than 50 million people are under heat alerts. The U.S. Geological Survey says a powerful earthquake with a magnitude of 7.2 rocked Peru's southern coast early today. There are no immediate reports of mass injuries or deaths. The tremor also triggered a small tsunami on Peru's coast. That's according to the Pacific Tsunami Warning Center. I'm Corva Coleman, NPR News.