A strengthening heat dome over the interior United States will drive oppressive temperatures through Monday, exposing a large share of the population to high heat.
The most intense dome is anchoring over the Rockies and Plains, while heat advisories remain in effect for portions of southern Colorado and several Midwestern states.
Thunderstorms may fire up in scattered areas but will offer scant 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 drink water often, limit outdoor effort during peak hours, and keep an eye on older relatives as the stretch of extreme heat worsens across the nation's midsection.