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.

"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.

Flash flood warnings were issued for multiple areas of the metro, including Independence, Raytown, and Blue Springs.

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.

LOUISVILLE, Ky. (WAVE) - An ALERT DAY is in place this evening as clusters of thunderstorms move into the region. Some storms may produce strong gusty winds. Flash flooding remains the top concern, especially along the I-64 corridor through the overnight hours.

“If you’ve never seen water rise in front of you in minutes, it’s hard to conceive of how quickly that can happen—and how quickly your life and property can be at risk,” said Rachel Hogan Carr, executive director of the Nurture Nature Center, a nonprofit focused on flood-risk communication.

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