Record-breaking heat wave and severe storms impact millions across the US.

A heat wave is hitting the U.S. South, with high temperatures and humidity causing discomfort and power outages. Communities from Houston to New Orleans have opened cooling centers to bring relief. A tornado in West Texas killed three people and left more than 1,000 customers without electricity. The National Weather Service issued excessive heat warnings along the Gulf Coast from Brownsville, Texas, to Houston. A waterspout swept ashore on a Florida beach, injuring two people.