Federal regulators repeatedly granted appeals to remove Camp Mystic’s buildings from their 100-year flood map, as the camp operated and expanded in a dangerous flood plain in the years before rushing waters swept away children and counselors.

The National Weather Service issued a flash flood warning for Boston, Quincy, Brockton, and other nearby communities. See where

Heavy rainfall caused areas of flooding on I-93 and other major roadways in Massachusetts on Thursday morning.

A flash flood warning is in effect until 9 a.m. for Boston and several communities south of the city, including Brockton, Quincy, and Randolph, officials said Thursday morning. The National Weather Service also issued a flood watch that will remain in effect until 4 p.m. for Rhode Island and eastern portions of Massachusetts and Connecticut.

Six months on from serious flooding in Lincolnshire, residents say they are continuing to face severe disruption. Thirty-six homes in Boston were flooded internally on the night of 6 January when the South Forty Foot Drain overtopped, with many suffering extensive damage on the ground floor.

Flash flooding could impact parts of south central and southeastern Massachusetts, Connecticut, and Rhode Island, Boston meteorologists warned.

The Department of State Health Services released records Tuesday showing the camp complied with a host of state regulations regarding “procedures to be implemented in case of a disaster.”