Millions facing powerful storms, severe heat across U.S.

Another weekend of severe weather is unfolding as millions face storms and extreme high temperatures across the U.S.. Meteorologist Grant Gilmore has the forecast.

Extreme weather battered parts of the United States with severe storms, flooding, tornadoes and even waterspouts. States of emergency were declared on Long Island and in Delaware, while Kentucky and Pennsylvania also reported severe tornado and wind damage. NBC’s Valerie Castro reports and TODAY’s Dylan Dreyer tracks t