The severe thunderstorms pose a significant risk of flash flooding in the Midwest, Northeast, and Mid-Atlantic regions, potentially disrupting travel and causing property damage. The Gulf Coast faces the threat of heavy rainfall and strong winds as Tropical Storm Bertha approaches, with flash flooding likely from western Florida to the Texas coast. The heat dome over the central U.S. is creating dangerous conditions, with heat indices exceeding 100°F (37.8°C) in several states, including Illinois, Kentucky, and Missouri. Prolonged exposure to the heat could lead to heat-related illnesses. Additionally, wildfire smoke from Canada is causing unhealthy air quality in the Great Lakes and Midwest, posing health risks, particularly for vulnerable groups such as children, the elderly, and individuals with respiratory conditions.