Photos: South grapples with dangerous heat wave
Emergency medical technicians help the Eagle Pass Fire Department stock water and ice in Eagle Pass, Texas, on Thursday, June 29.
Brandon Bell/Getty Images

In pictures: South grapples with dangerous heat wave

Updated 1730 GMT (0130 HKT) June 30, 2023

Emergency medical technicians help the Eagle Pass Fire Department stock water and ice in Eagle Pass, Texas, on Thursday, June 29.
Brandon Bell/Getty Images

Millions of Americans have been sweltering under a heat wave that has brought triple-digit temperatures to parts of the South.

The scorching temperatures are being brought on by a "heat dome," which is created when a ridge of high pressure builds over an area, trapping air inside as temperatures warm — often to uncomfortable or even dangerous levels.

As Americans face hotter and hotter temperatures, officials are urging people to take safety precautions. The medical examiner in Webb County, Texas, reported Wednesday that nine people had died in eight days due to heat-related illnesses.