More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

and tornadoes across the central and eastern United States. AccuWeather meteorologists are warning that an active pattern will bring thunderstorms from the northern Plains to the Atlantic coast ...

and tornadoes across the central and eastern United States. AccuWeather meteorologists are warning that an active pattern will bring thunderstorms from the northern Plains to the Atlantic coast ...