lowest pressure of , and peak winds of 105 mph (170 km/h); originally the hurricane was analyzed to reach peak winds of 120 mph (195 km/h), although the large size and slow forward speed suggested the lower winds. It maintained its peak winds for about 12 hours, after which it weakened due to cooler air in the region. By August 15, the eye had become poorly defined, and winds steadily weakened. As it approached land, its center deteriorated, with minimal precipitation near the center; the eye was observed on a radar installed in July 1955. On August 17, Diane made landfall on the coast of North Carolina near Wilmington. Pressure at landfall was estimated at , accompanied by winds just under hurricane intensity. Diane struck the state only five days after Hurricane Connie struck the same general area. Diane quickly weakened as a tropical storm over the mountainous terrain of central North Carolina. The associated area of precipitation expanded and spread away from the center to the north and northeast. The weakening system turned to the north and recurved toward the northeast through Virginia after a ridge built in from the west. It did not interact much with the non-tropical westerlies, and as a result it remained a distinct tropical cyclone over land. Convection redeveloped as the storm approached the Atlantic coast once again. Diane passed through the Mid-Atlantic states, exiting New Jersey on August 19 into the Atlantic Ocean southeast of New York City. Paralleling the southern coast of New England, the storm later accelerated east-northeastward, becoming extratropical on August 21. Passing south and east of Newfoundland, the remnants of Diane accelerated and restrengthened slightly while moving to the northeast. Late on August 23, the storm dissipated between Greenland and Iceland. Preparations and background Late on August 14, more than two days before Diane made landfall, the United States Weather Bureau issued a hurricane alert from Georgia through North Carolina. On August 15, the agency issued a hurricane warning from Brunswick, Georgia to Wilmington, North Carolina, although the warning was later extended to the south and north to Fernandina, Florida and Cape Hatteras, North Carolina, respectively. The agency also issued storm warnings southward to Saint Augustine, Florida and northward to Atlantic City, New Jersey, including the Chesapeake and Delaware bays. Throughout the warned region, small ships were advised to remain at port. Before Diane made landfall, the North Carolina