A significant spring heat wave is currently affecting the eastern United States, bringing unusually high temperatures and breaking records across the region. Temperatures are ranging from 20 to 30 degrees Fahrenheit above normal for this time of year, and forecasts suggest that over 150 record highs could be broken before the heat subsides on Saturday. The extreme heat is expected to impact nearly 30 million people, with major metropolitan areas such as New York, Philadelphia, Washington, D.C., Atlanta, and Nashville all experiencing temperatures reaching or exceeding 90 degrees Fahrenheit.