Hurricane Bertha caused minor damage in the United States, Bermuda, and Atlantic Canada in July and August 1990. The third tropical cyclone, second named storm, and first hurricane of the 1990 Atlantic hurricane season, Bertha developed from a frontal low pressure area offshore of North Carolina on July 24. Initially subtropical, it slowly acquired tropical characteristics while tracked southeast and then southwestward. By early on July 27, the cyclone was re-classified as a tropical depression. Following its transition, the depression intensified and was upgraded to Tropical Storm Bertha on July 28. The storm then curved northeastward and rapidly strengthened. Bertha became a hurricane early on July 29, though it weakened back to a tropical storm later that day. On the following day, Bertha re-intensified into a hurricane and peaked as an 80 mph (130 km/h) Category 1 hurricane on July 31. Category 1 hurricane: peak winds of 80 mph (70 knots), lowest pressure 973 mb. July 24 – August 2, 1990. Accumulated cyclone energy: 7.9. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track AL031990 (public domain).