Numerous water rescues were reported after heavy rain drenched the state and sent raging brown water surging down Main Street in Ellicott City and past vehicles.
Some buildings had just finished final renovations from the 2016 flood when they were again gutted by floodwaters. On Sunday, the community received almost 8 inches (20 centimeters) of rain over a 6-hour period, but most of it fell during an intense, 3-hour period, Muccilli said. A local newspaper reporter remarked on Twitter that Sunday's flooding looked "worse than 2016", when a similar flash flood struck the same neighborhood on Saturday, July 30.
Baltimore County fire department spokeswoman Elise Armacost told residents, "If you don't have to be outside, you shouldn't be, later adding, "You're much safer indoors". We're doing the best we can to help anybody that needs help", County Executive Allan Kittleman said.
Ellicott City, Maryland, located about 12 miles west of Baltimore, resides in the valley of the Patapsco River, which flows into the Chesapeake Bay.
Gov. Larry Hogan also asked people to avoid area roads. But by nightfall first responders and rescue officials were still going through the muddied, damaged downtown, conducting safety checks and ensuring people evacuated.
A video filmed outside the city shows cars abandoned on the streets being devoured by water.
Howard County Fire and EMS said there were reports of building collapses in the area and a gas leak broke out, BGE said, causing an evacuation of the west end of Main Street.
The Maryland Eastern Shore is under a Flash Flood Watch until 4 a.m. Monday, as storms and rain move through central Maryland to areas east and northeast. Rescue workers from as far away as northern Virginia were called in to help. Local officials recently said that 96 percent of the businesses were back in operation and more than 20 new businesses had again opened in the Main Street area.
Flash flooding covers the intersection of Rogers Avenue and Main Streets in Ellicott City, Md., May 27, 2018.
The National Weather Service issued a flash flood warning for northeastern Anne Arundel County and southeastern Howard County through 12:45 a.m. Monday.