A volatile mix of violent thunderstorms and a sprawling, oppressive heat dome is setting the stage for an extremely dangerous weather pattern this week across much of the Midwest and Eastern United States. Forecasters are warning that the combination of blistering heat and sudden, intense storms may lead to deadly conditions through the final stretch of July.
As of Sunday, July 21, over 50 million Americans from Texas to Missouri remain under extreme heat warnings and advisories issued by the National Weather Service. In places like Kansas City, where triple-digit highs haven’t been seen in two years, temperatures are expected to soar past 100°F (38°C) several times this week. Dallas is also bracing for its first 100°F (38°C) day of 2025, with no relief in sight.
AccuWeather meteorologists are especially alarmed by the severe thunderstorm threat sweeping through the Midwest and parts of the East, including Illinois, Indiana, Ohio, Kentucky, and West Virginia. These regions, already saturated by earlier storms, face a significant risk of life-threatening flash flooding. Alex Sosnowski, Senior Meteorologist at AccuWeather, warned that the ground across much of the area simply cannot absorb another round of torrential rain.
Overnight thunderstorms from southern Nebraska stretching up into Canada may bring torrential downpours, large hail, and damaging wind gusts up to 85 mph (137 km/h). These fast-moving cells could trigger dangerous conditions for drivers and residents, especially in low-lying and urban flood-prone areas.
At the heart of this extreme pattern is a powerful ridge of high pressure building in the upper atmosphere, causing a bulge in the jet stream that’s trapping scorching air over the central United States. This so-called heat dome is forecast to linger well into August, potentially locking in weeks of extreme heat with little to no rainfall.
According to Senior Meteorologist Chad Merrill, the pattern has the hallmark of a long-duration heat wave. As temperatures continue to climb, drought conditions are likely to expand, especially across the central Plains, where Kansas and Nebraska are already experiencing moderate to extreme drought pockets.
Meanwhile, in Texas, authorities in Kerr County have revised the number of missing persons from the catastrophic Fourth of July weekend flooding. On July 19, the Kerr County Flood Disaster Joint Information Center confirmed that only three people remain unaccounted for — a sharp drop from the previously reported 97. The death toll across Texas remains staggering, with 135 lives lost statewide, including 116 in Kerr County alone.
July’s final week is shaping up to be one of the most turbulent and dangerously hot stretches of the summer so far, with extreme weather impacting millions across multiple time zones.
