final landfall, with wind gusts of reported on Block Island, Rhode Island. The hurricane produced extensive beach erosion which destroyed coastal roads in the state. Monetary damage was greatest in Massachusetts, and along Bob's path through southeastern New England more than 60% of people were left without power. High tides and strong winds destroyed boats and houses along the Massachusetts coastline. The heaviest rainfall from the hurricane fell at the Portland International Jetport in Maine, where fell during its passage. Across the United States, damage totaled $1.5 billion (1991 USD), including over $1 billion in Massachusetts. The high damage total made Bob among the ten costliest U.S. hurricanes at the time. In addition, there were 15 fatalities in the country. In Canada, high waves killed two people. In Fredericton, New Brunswick, tropical storm-force winds downed trees and power lines. Tropical Depression Four One of the few vigorous tropical waves of the season emerged from the western coast of Africa with a large area of convection in late August. On August 24 it developed into a tropical depression near Cape Verde. Upon first forming, the depression had a circular area of convection near the center. It was initially well-organized, but the depression was not expected to intensify due to marginal water temperatures; tropical cyclones generally require warm waters to develop. By August 25, the system lost much of its deep convection, and on August 26 the depression dissipated to the west-southwest of the Cape Verde islands. Tropical Depression Five Around the same time as the previous system dissipated, another tropical wave moved off the coast of Africa on August 26. On August 28 it formed into a tropical depression about southwest of Cape Verde. Upon developing, the depression had a small area of convection with a spiral rainband, and the NHC anticipated slow strengthening to tropical storm status. With a ridge to the north, the depression maintained a general westward track. Ultimately, the depression failed to organize significantly. By August 29, it had a broad and poorly organized circulation with only scattered convection. Due to cool water temperatures, the system was unable to maintain deep convection, and on August 31 the depression degenerated into a tropical wave about east of the Lesser Antilles. Hurricane Claudette The origins of Claudette were non-tropical, developing on September 4 about southeast of Bermuda from an upper-level disturbance. Following its formation, it developed slowly while moving