Tropical Storm Debbie of the 1965 Atlantic hurricane season broke the daily rainfall record in Mobile, Alabama, despite dissipating offshore.

The sixth tropical storm of the season, it developed on September 24 in the western Caribbean Sea, and moved northwestward for several days without intensifying.

It initially threatened areas of Louisiana that sustained significant damage from Hurricane Betsy in early September, although Debbie only caused light rainfall and some flooding in the state.

A low-pressure area developed into a weak tropical depression on September 24 off the north coast of Honduras in the western Caribbean Sea.

[4] As Debbie approached the northern Gulf Coast, it failed to intensify, despite warm sea surface temperatures, abundant moisture, and an anticyclone aloft.

After maintaining peak winds for about 12 hours, Debbie weakened due to cooler, drier air,[1] deteriorating to a tropical depression on September 29.

[7] Before Debbie dissipated, local Weather Bureau offices issued a gale warning and a hurricane watch from the mouth of the Mississippi River to Cedar Key, Florida.

[11] The rains resulted in 6 ft (1.8 m) of flooding that closed several businesses and roads,[12] causing the worst traffic jam on record in the city.