Unrelenting heat has killed at least 30 people across half the country.
The heat sent temperatures soaring over 100 degrees Fahrenheit (38 degrees Celsius) in several cities, including a record 105 F (40.5 C) in Washington, St. Louis (106 F, 41 C), and Indianapolis (104 F, 40 C), buckled highways and derailed a Washington-area train even as another round of summer storms threatened.
click image for full storyThe heat sent temperatures soaring in more than 20 states to 105 F (40.5 C) in Louisville, Kentucky, 101 F (38.5 C) in Philadelphia, and 95 F (35 C) in New York; besides Washington, a record of 104 F (40 C) was set in Sioux Falls, South Dakota, and Baltimore set a record at 102 F (39 C).
At least 30 deaths were blamed on the heat, including nine in Maryland and 10 in Chicago, mostly among the elderly. Three elderly people found dead in their houses in Ohio had heart disease, but died of high temperatures in homes lacking power because of recent outages, officials said. Heat was also cited as a factor in three deaths in Wisconsin, two in Tennessee and three in Pennsylvania.