Heat dome traps over 90 million Americans in dangerous temperatures

In the United States, a significant weather event known as a heat dome is currently affecting more than 90 million people across various regions. This phenomenon, characterized by an extensive area of high pressure, has resulted in dangerously high temperatures, surpassing 100 degrees Fahrenheit in some areas. This week's forecast indicates that cities such as St. Louis, Kansas City, and Oklahoma City will experience elevated heat indices, with 'feels-like' temperatures reaching between 110 and 115 degrees. As high humidity exacerbates these extreme temperatures, health risks for individuals, especially those without air conditioning, are increasing. Recently, parts of the Midwest have also been enduring catastrophic flooding, further complicating the weather landscape. Flash flood emergencies were declared in Illinois, with rainfall rates hitting up to 3 inches per hour in some places. This has created challenges, as the ongoing heat and humidity compound the difficulties faced by affected regions. The National Weather Service has issued numerous heat alerts from Nebraska to Florida, indicating the widespread impact of this heat dome. Typically, heat domes trap heat within their high-pressure systems, preventing cooler air from circulating. This week marks a significant stretch of hot, dry weather as the heat dome develops, prompting concerns about heat-related illnesses and demands for hydration and safety awareness among the public. As the week progresses, some areas may see brief reductions in storm chances due to the shifting of the dome, but the heat is expected to remain prevalent, driving temperatures higher across the Midwest and southern states. Additionally, the phenomenon known as 'corn sweat'—resulting from corn releases moisture into the air—intensifies the discomfort felt from the heat. Humidity is anticipated to remain high, particularly in agricultural areas, which may adversely affect crop yields. Experts assert that climate change has contributed to increased temperatures in July, making extreme heat occurrences more likely. The events surrounding the heat dome emphasize the interconnectedness of climate patterns and the resultant health implications, as many individuals face the cumulative strain from high temperatures, humidity, and flooding.