A cold front is expected to push into the Memphis metro area this weekend, offering the first atmospheric break in a prolonged stretch of dangerous heat that has kept heat indices above 105°F across the Delta region. The xAI Colossus supercomputer campus, which draws 380 megawatts of power from five dedicated natural gas turbines and converts almost all of it into waste heat every day, remains a source of heat unaffected by weather. Memphis is simultaneously one of the most heat-vulnerable mid-size cities in the United States and the home of the most power-hungry artificial intelligence infrastructure on Earth. On Friday, July 31, 2026, the National Weather Service office in Memphis issued an alert warning that heat indices in the Delta region would surge above 105°F, and flagged a slight risk of severe thunderstorms west of the Mississippi River. The heat dome is expected to weaken as the weekend arrives, with Saturday and Sunday forecast to bring meaningfully lower temperatures. Memphis Light, Gas and Water has maintained its policy of pausing electricity shutoffs when heat indices reach dangerous levels, a protection for the city's roughly 650,000 residents. xAI selected the site partly because of the Tennessee Valley Authority's power grid, and the facility runs hundreds of thousands of NVIDIA H100 and H200 graphics processing units.