A gripping heat dome over the interior United States will drive extreme temperatures through Monday, exposing a large share of the population to high heat.
The heaviest dome is setting up 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 offer scant relief from the blistering heat.
Forecasters warn the dome's intensity will slow cool fronts and carry record-breaking conditions through next week.
Residents are urged to keep water handy, limit outdoor effort during peak hours, and look in on neighbors as the stretch of extreme heat spreads wider parts of the country's interior.