An area of low pressure on the end of a front north of the Bahamas intensified into tropical storm Diana on September 8th. Diana approached the Florida east coast on the 9th before turning north. By the 10th Diana had intensified into a hurricane as it was moving on a course parallel to the Georgia and South Carolina coasts. Over the next two days, Diana intensified as it moved close to the southeast North Carolina coast. However, the storm did not immediately move inland. Instead, for a period of 30 hours, the center of the storm turned to the right, in a tight clockwise loop. As the storm looped off the coast it began to lose strength. Diana's center crossed the coast due south of Wilmington around 1 AM on the 13th and moved inland before turning northeast and back offshore. At the time of lanfall, Diana was classified as a minimal category two storm. Despite this, it was the first significant hurricane to strike the North Carolina coast since Donna in 1960. The central pressure reached its lowest value of 949 mb (28.02 inches) at 8 PM on the 11th when the eye was within 25 miles of the southeast North Carolina coast. The winds were estimated to be 130 mph at the time of the lowest pressure. The highest sustained wind observed on land was 116 mph at the U.S. Coast Guard facility at Oak Island. This observation was taken at 740 PM on the 11th when Diana was at maximum intensity and centered a short distance off the coast. The highest tide height was 5.5 feet at Carolina Beach. The maximum rainfall total was 13.7 inches at Wilmington over a three day period.
Isidore developed near the southeastern Bahamas on September 25th along a front. The depression moved northwest through the Bahamas, intensifying to a tropical storm on the 26th. The storm moved onshore across the central Florida east coast on the 27th, recurved and moved back offshore across the north Florida east coast. Isidore then accelerated north as it paralleled the Carolinas. The system dissipated on October 1st about 300 miles northeast of Bermuda. Isidore was the last of eight named tropical cyclones ot occur during September, 1984. At that time, this was the most named storms in one month, on record, since 1886.
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