A building heat dome over the interior United States will drive dangerous temperatures through Monday, exposing a significant share of the population to high heat.
The heaviest dome is anchoring over the Rockies and Plains, while heat advisories continue for portions of southern Colorado and several Midwestern states.
Thunderstorms may spark up in scattered areas but will provide minimal relief from the sweltering heat.
Forecasters warn the dome's intensity will hold off cool fronts and sustain record-breaking conditions through next week.
Residents are urged to drink water often, limit outdoor strenuous work during peak hours, and check on neighbors as the stretch of extreme heat spreads throughout the nation's interior.