Agnes

(Wikipedia) Hurricane Agnes was the first tropical storm and first hurricane of the 1972 Atlantic hurricane season. A rare June hurricane, it made landfall on the Florida Panhandle before moving northeastward and ravaging the Mid-Atlantic region as a tropical storm. The worst damage occurred along a swath from central Virginia through central Pennsylvania to the southern Finger Lakes region of New York, as illustrated by the rainfall map below [above].
Agnes brought heavy rainfall along its path, killing 129 and causing $1.7 billion in damage, with railroad damage so extensive it contributed to the creation of Conrail. At the time, it was the most damaging hurricane ever recorded, surpassing Hurricane Betsy, and it would not be surpassed until Hurricane Frederic in 1979. Agnes was also the only Category 1 hurricane to have its name retired at the time. Continued