impact. Total damages were estimated near $170,000 in Pensacola area. Five deaths were reported in Florida, all of them in the city of Crestview. Tropical depressions In addition to the four systems reaching tropical storm intensity, there were five other tropical depressions. The first probably developed from a tropical wave offshore western Africa on September 12, according to historical weather maps and the Comprehensive Ocean-Atmosphere Data Set (COADS), both of which indicated a closed circulation. This depression was last observed on September 14. Another depression also developed on September 12, well to the east of the Lesser Antilles. While approaching the islands, the storm may have briefly strengthened into a tropical storm on September 15, as suggested by a ship report of winds blowing 40 mph (65 km/h). The cyclone likely dissipated on September 15. The next tropical depression briefly existed off the east coast of Florida on September 14. It soon became extratropical, though its remnants lasted several days, traveling along the East Coast of the United States. At Nantucket, a wind gust up to was observed. The extratropical remnants probably dissipated near Newfoundland on September 20. Meanwhile, a trough in the Gulf of Mexico had developed into a tropical depression on September 14. The following day, the system made landfall in Louisiana and disintegrated into a disorganized area of thunderstorms over Mississippi and Arkansas on September 16. The last tropical depression and final cyclone of the season developed on October 19 from a trough over the central Atlantic Ocean. Two days later, the depression was absorbed by a cold front. See also List of tropical cyclones Atlantic hurricane season 1900–1940 South Pacific cyclone seasons 1900–1950 South-West Indian Ocean cyclone seasons 1910s Australian region cyclone seasons References External links Monthly Weather Review Articles which contain graphical timelines 1917 meteorology 1917 natural disasters