A tightening heat dome over the interior United States will drive dangerous temperatures through Monday, exposing a wide share of the population to high heat.
The deepest dome is anchoring over the Rockies and Plains, while heat advisories persist for portions of southern Colorado and several Midwestern states.
Thunderstorms may fire up in scattered areas but will do little relief from the sweltering heat.
Forecasters warn the dome's intensity will slow cool fronts and carry record-breaking conditions deep into next week.
Residents are urged to stay hydrated, limit outdoor activity during peak hours, and look in on neighbors as the stretch of sweltering heat grows the length of the central half.