A strengthening heat dome over the nation's heartland United States will drive oppressive temperatures through Monday, exposing a large share of the population to high heat.
The heaviest dome is forming over the Rockies and Plains, while heat advisories continue for portions of southern Colorado and several Midwestern states.
Thunderstorms may fire up in scattered areas but will do little relief from the stifling heat.
Forecasters warn the dome's intensity will delay cool fronts and extend record-breaking conditions deep into next week.
Residents are urged to drink water often, limit outdoor activity during peak hours, and watch out for vulnerable neighbors as the stretch of searing heat spreads wider parts of the nation's interior.