Heat Wave in Northeast and Midwest

A dangerous heat wave in the Northeast and Midwest is breaking records with highs in the mid-90s. Heat alerts are issued for various regions, with some relief expected in New England and upstate New York. Heat index may reach upper 90s or lower 100s, with heat illness risk due to high temperatures, warm lows, and humidity. Jet stream pushed northward causing a heat dome over the East. Linda Lam, lead meteorologist at weather.com, provides insights.