Significant rainfall from storms caused flash flooding in parts of Montgomery County, Maryland, located north of Washington, D.C., on Saturday, trapping many in buildings and cars.

The National Weather Service urged people to avoid travel if a flash flood warning was in place for their area.

Texas flood at Camp Mystic prompts summer camps to enhance weather monitoring and communication tools as more camps seek accreditation for improved safety standards.

Scientists say human-caused warming is turning rare 1,000-year storms into repeat events, making summer increasingly deadly.

"Flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures," according to the National Weather Service.

The Trump administration has changed course and is moving ahead with work to develop a new database that would provide Americans with precise estimates of their flash flood risk in a warming world.

At 11:58 a.m. on Friday, the NWS San Diego CA released an updated flash flood warning in effect until 2 p.m. for San Bernardino County.

LOUISVILLE, Ky. (WAVE) - An ALERT DAY is in place this evening as clusters of thunderstorms move into the region. Flash flooding remains the top concern, especially along and north of I-64. Overnight storms fade Monday morning.

At 8:03 a.m. Sunday, doppler radar and automated rain gauges indicated the heaviest rain had left the warned area but smaller streams are still rising, the statement said.