A heat dome expands across much of the central United States, creating dangerous conditions for millions, according to reports. The system is expected to push temperatures above 100 degrees across a wide stretch of the region, with forecasts indicating extreme heat from the Dallas area northward toward North Dakota. The unusual atmospheric setup is contributing to sustained, high temperatures rather than brief spikes, increasing the risk of heat-related illness. The heat is expected to affect multiple states over the coming days, raising concerns for public health and safety, particularly for people working outdoors, older adults, and those without reliable access to cooling. Authorities in affected areas typically urge residents to limit strenuous outdoor activity, stay hydrated, and look out for vulnerable neighbors as temperatures remain elevated. While the specific timing and intensity can vary by location, both outlets describe the broader pattern: an expanding heat dome over central U.S. areas and widespread temperatures in excess of 100 degrees.