A building heat dome over the interior United States will drive oppressive temperatures through Monday, exposing a wide share of the population to high heat.
The strongest dome is forming over the Rockies and Plains, while heat advisories persist for portions of southern Colorado and several Midwestern states.
Thunderstorms may pop up in scattered areas but will offer little relief from the stifling heat.
Forecasters warn the dome's intensity will delay cool fronts and extend record-breaking conditions through next week.
Residents are urged to drink plenty of water, limit outdoor effort during peak hours, and look in on neighbors as the stretch of sizzling heat settles across a wide band of the country's interior.