From July 4 through July 9, 13 states across the U.S. were hit with flash flooding, some of it catastrophic. The worst damage came out of Central Texas, where a 26-foot surge along the Guadalupe River killed at least 115 people, including 27 children and camp counselors at Camp Mystic. That makes it the deadliest rainfall-driven flash flood in the country since 1976. Up to 20 inches of rain fell in the Texas Hill Country, overwhelming riverbanks and wiping out entire stretches of infrastructure. Kerr County alone reported more than 75 deaths, and hundreds remain unaccounted for. FEMA has been activated, and President Trump signed a federal disaster declaration for the region on July 7.
North Carolina saw more than 100 water rescues near Durham and Chapel Hill after remnants of Tropical Storm Chantal dumped up to 12 inches of rain. In Ruidoso, New Mexico, burn scars from 2024 wildfires turned a few inches of rain into a 20-foot rise in the Rio Ruidoso, sweeping homes downstream and killing three people. Chicago was hit with a rain bomb on July 8, dropping five inches in under 90 minutes. Cars and garages were submerged across the west side, and water rescues were performed throughout the city. Massachusetts, Rhode Island, Connecticut, and Maryland all reported flash flooding from stalled thunderstorms, with widespread road closures and stranded vehicles.
The National Weather Service flagged the Mid-Atlantic and Northeast for excessive rainfall risk through July 9, with some areas facing a 15% chance of rainfall exceeding flash flood thresholds. That includes parts of Virginia, Pennsylvania, New Jersey, and New York. A broader marginal risk zone covered nearly half the country, stretching from New Mexico to Maine. NOAA data shows that July is historically the peak month for flash flooding, with 75% of annual reports occurring between late April and mid-September. The jet stream’s weak summer position slows storm movement, increasing rainfall intensity. Tropical moisture from Chantal and Barry added fuel to the system.
Hourly rainfall rates are now 15% higher on average than in 1970, according to a 2025 study by Climate Central. Of 144 cities analyzed, 126 showed increased rainfall intensity. The biggest jumps were seen in the Midwest, Northern Rockies, and Ohio Valley. Warmer air holds more moisture, and every 1°F of warming allows the atmosphere to carry 4% more water vapor. That’s translating into heavier downpours and more frequent flash flood emergencies.
Texas officials say the Guadalupe River flood surpassed the 1987 record and caught residents off guard in the middle of the night. “This came at night when people were asleep in bed,” said Kerrville Mayor Joe Herring Jr. Camp Mystic reported losing power, water, and Wi-Fi during the flood. “Our hearts are broken alongside our families that are enduring this unimaginable tragedy,” the camp said in a statement. Search and rescue teams are still combing the riverbanks, with K-9 units and helicopters deployed across Kerr County.
Sources
https://abcnews.go.com/US/timeline-catastrophic-flooding-texas-claims-lives-27/story?id=123500139
https://www.cbsnews.com/news/maps-texas-flash-flooding-camp-mystic/