Hurricane Bertha caused minor damage in the United States, Bermuda, and Atlantic Canada in July and August 1990.

Early on August 2, Bertha made landfall near Sydney, Nova Scotia while weakening and transitioning back into an extratropical cyclone.

In Canada, strong winds caused moderate crop damage in Prince Edward Island and collapsed a suspension bridge in Nova Scotia.

By the following day, a low pressure area developed just southeast of Cape Hatteras, North Carolina ahead of the frontal zone, and quickly formed into a subtropical depression.

Convection developed closer to the center of circulation as it gradually decelerated while continuing southwestward and on July 27, the system organized into Tropical Depression Three while located about 335 miles (539 km) east of Daytona Beach, Florida.

Conditions favored further intensification, and based on ship reports, it is estimated the depression strengthened into Tropical Storm Bertha early on July 28.

Bertha quickly strengthened to attain hurricane status early on July 29 about halfway between Cape Canaveral, Florida and Bermuda.

The strengthening trend was brief, however, as increased vertical wind shear weakened it back to a tropical storm late on July 29, with the center exposed from the deep convection.

Early on July 31, the hurricane briefly attained peak winds of 80 mph (130 km/h) before weakening and accelerated northeastward as the ridge of high pressure was slowly eroded.

The storm was transitioning into an extratropical cyclone while approaching Atlantic Canada, and lost all tropical characteristics shortly after moving ashore.

[2] The formation of Bertha in close proximity of the East Coast of the United States prompted residents to stock up on emergency supplies and monitor the storm.

[8] However, the storm bypassed Bermuda, which caused only minor effects on the island; limited to rough seas and wind gusts reaching 45 mph (72 km/h).