An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with triple-digit temperatures in places that haven't been so hot in more than a decade.
The heat wave is especially threatening because it's hitting cities like Boston, New York and Philadelphia early in the summer when people haven't gotten their bodies adapted to the broiling conditions, several meteorologists said. The dome of high pressure that's parking over the eastern United States is trapping hot air from the Southwest that already made an uncomfortable stop in the Midwest.
