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.

A flash flood warning has been issued for two major U.S. states on Sunday afternoon. The National Weather Service is warning two U.S. states about a potential flash flood situation. In recent weeks, multiple U.

On Sunday at 5:15 a.m. a flash flood warning was issued by the National Weather Service in effect until 9:15 a.m. for Monmouth and Ocean counties.

Arlington and the immediate D.C. area is now under a Flood Watch. The watch was issued shortly before 5 p.m., amid developing storms in the area, and will remain in effect until 10 p.m. More, below, from the National Weather Service.

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

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.

The warning was issued for Ashe County. "The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures," states the NWS Blacksburg VA. The warning is in effect until 9 p.m.

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.

“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.

The flash floods killed at least 135 people in Texas over the holiday weekend, with most deaths along the Guadalupe River in Kerr County.