A busy stretch of severe thunderstorms is underway due to record heat and now the threats are ramping up, putting major metro areas from Chicago to Nashville under threat as the country hits the peak of tornado season.

A series of severe thunderstorms packing high winds, hail and tornadoes will progress from the Great Lakes to the Ohio and Tennessee valleys through the end of the week, AccuWeather meteorologists warn.

Violent storms and long-lived tornadoes could hit the central and eastern U.S. through the weekend, bringing widespread damage, power outages, and dangerous travel conditions.