A stubborn heat wave that has engulfed much of the Western United States for more than a week continued to linger over the region on Friday, with triple-digit temperatures expected to stretch into the weekend for millions of Americans. In the Denver area, a heat advisory was in effect through the weekend, with the National Weather Service predicting record-breaking temperatures for both Saturday and Sunday. The heat will subside in the West this weekend, but it isn’t going away. Before Saturday, another up to two-dozen daily records could be broken to begin the weekend. “This long-duration heat wave remains extremely dangerous and deadly if not taken seriously,” a forecaster with the Weather. …The extreme heat will push into the Midwest and Eastern U.S. by early next week, with heat indexes as high as 110 degrees expected in the Philadelphia area and in the low 100s in New York. [to access the full story a NY Times subscription is required]