A massive storm in the Baltimore region led to devastating flash floods in Ellicott City, Maryland, on Sunday, May 27. Emergency services conducted 30 rescues into Monday morning.

Ellicott City experienced similar flash floods almost two years ago that left two people dead and damaged dozens of buildings.

Floodwaters rush through Main Street on Sunday. Ellicott City is an unincorporated community about 12 miles west of Baltimore. It's in the valley of the Patapsco River, a major waterway flowing to the Chesapeake Bay.
Floodwaters rush through Main Street on Sunday. Ellicott City is an unincorporated community about 12 miles west of Baltimore. It's in the valley of the Patapsco River, a major waterway flowing to the Chesapeake Bay.
Libby Solomon/The Baltimore Sun via AP
People evacuate the Ellicott Mills Brewing Co. on Sunday. Many businesses had just finished rebuilding from the 2016 flooding, according to Howard County Executive Allan Kittleman. "There are no words," he said. "It's heartbreaking."
People evacuate the Ellicott Mills Brewing Co. on Sunday. Many businesses had just finished rebuilding from the 2016 flooding, according to Howard County Executive Allan Kittleman. "There are no words," he said. "It's heartbreaking."
Katherine Frey/The Washington Post via Getty Images
Officials wait for backup as floodwaters race through Main Street on Sunday.
Officials wait for backup as floodwaters race through Main Street on Sunday.
Katherine Frey/The Washington Post via Getty Images
Kelli Myers and her son Sam were rescued from a store in Ellicott City. She owns two businesses that were flooded.
Kelli Myers and her son Sam were rescued from a store in Ellicott City. She owns two businesses that were flooded.
Katherine Frey/The Washington Post via Getty Images
A car is flooded in a lot near Main Street on Sunday.
A car is flooded in a lot near Main Street on Sunday.
Kenneth K. Lam/The Baltimore Sun via AP
Residents gather by a bridge Monday to look at some cars that were left crumpled by the floods.
Residents gather by a bridge Monday to look at some cars that were left crumpled by the floods.
David McFadden/AP
Rescue personnel examine damage on Main Street.
Rescue personnel examine damage on Main Street.
JIM LO SCALZO/EPA-EFE/REX/Shutterstock
A police car drives past damaged vehicles on Sunday.
A police car drives past damaged vehicles on Sunday.
JIM LO SCALZO/EPA-EFE/REX/Shutterstock