Hurricane Agnes: The Category 1 That Drowned an Entire State

Hurricane Agnes was not an impressive storm by most meteorological measures. It made its first American landfall near the Florida Panhandle on June 19, 1972, with maximum sustained winds of 75 miles per hour — barely Category 1 strength. It weakened rapidly after moving inland. By the time it crossed Georgia, it was only a tropical depression. By standard measures, Agnes should have been a footnote in hurricane history.

Instead, it became the costliest natural disaster in American history at the time, killing 128 people and causing $2.1 billion in damage (1972 dollars). That figure exceeded the combined losses from Hurricane Betsy and Hurricane Camille, the two most destructive storms of the previous decade. Some survivors took to calling the storm “Hurricane Agony.”

A Hurricane That Came Back

After weakening to a tropical depression over Georgia, Agnes merged with a separate low-pressure system and re-intensified into a tropical storm over eastern North Carolina on June 21. The National Hurricane Center had already issued its final bulletin on the storm, a decision it reconsidered when atmospheric pressures began dropping again. Agnes returned as a strong tropical storm, made a second landfall on Long Island on June 22 with winds near 70 mph, and then went extratropical over Connecticut. Its remnants stalled over northeastern Pennsylvania, directly above one of the most rain-sensitive river systems in the eastern United States.