US Heat Advisory Today (July 27): Heat warnings issued across multiple states as temperatures soar above 100°F

A dangerous heat wave grips large parts of the United States with high heat index values. North Texas and the Chicago metropolitan area face extreme heat warnings and advisories. Authorities have opened cooling centers to help residents cope with the intense heat. Dangerous heat is expected across the central and southern Plains and Southeast. Other weather threats include severe thunderstorms and potential flash flooding.