A sprawling heat dome has settled over the central United States, creating dangerous weather conditions for millions of residents. The high-pressure atmospheric system, which traps hot air over a large region, is expected to persist into next week. Temperatures are forecast to climb above 100 degrees in an area stretching from Dallas to North Dakota.
National weather authorities have issued heat advisories for between 70 and 80 million people across the affected region. The system is currently expanding, and officials are warning of the significant health risks posed by the prolonged period of extreme heat.
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