The heat dome will lead to prolonged high temperatures in the Mississippi Valley and eastern U.S., increasing the risk of heat-related illnesses. Cities like Nashville and St. Louis will experience highs in the 90s°F (32-37°C) for several days. Thunderstorms along the northern rim of the heat dome could bring damaging winds and flooding, especially in areas already impacted earlier this month. In the West, the cooldown may provide relief, but tropical moisture could lead to localized flooding in desert regions. Residents in affected areas should remain vigilant for potential severe weather and heat risks.