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.

Axios Visuals Last week's flooding across the Midwest and East continues a record-setting trend of flash flood warnings issued by the National Weather Service. Why it matters: The numbers reflect an especially rainy season,

Around 11 million Americans are under flood alerts Saturday evening as a "ring of fire" weather pattern continues to impact the eastern two-thirds of the country through the weekend. A flash flood emergency was issued near the Washington, D.C., area, including suburban Maryland, such as Chevy Chase and Silver Spring until 9 p.m. ET.

St. Louis tackles summer weather extremes with flash floods and intense heatwave warnings from the National Weather Service.

Early on Thursday morning the National Weather Service's Lake Charles office announced that it would be expanding the flash flood warning that previously went as far west as Vermillion Parish to include Calcasieu, Cameron, Allen, Jefferson Davis and Beauregard parishes. The watch is in effect from 7 a.m. on Thursday to 7 p.m. on Saturday.

Storms outside the higher-risk zones caused problems in central Maryland with Flash Flood Warnings and a Flash Flood Emergency being issued outside Washington, D.C. Areas such as Bethesda, Takoma Park,

Camps are essentially on their own in terms of crafting a plan to deal with weather emergencies. Alabama camps must get permits from the Alabama Department of Public Health’s Division of Food, Milk and Lodging, according to Henry DeHart, interim president and CEO of the American Camp Association.

“The biggest thing is making sure you have a plan ahead of time when it’s not raining,” he said. “I highly recommend weather.gov/safety/flood. That will walk you through flood preparedness tips and what to do before, during, and after an event.”