High resolution modelling by Karen Clark & Co (KCC) has estimated total insured losses from the first named storm of 2018’s hurricane season Alberto at $50 million, a figure which includes residential, commercial/industrial property and auto losses.
Alberto formed as a subtropical storm over the western Caribbean on May 25, tracking northeastward near western Cuba.
In order to be classified as a tropical storm, the source of energy would have to be derived completely from warm sea surface temperatures (SSTs) rather than from the temperature difference in air masses.
Throughout the forecast period, cyclonic strengthening and increased organization were expected due to warm SSTs and light shear, said KCC.
On the morning of May 27, Alberto exhibited characteristics of a tropical cyclone, including better defined circulation, smaller radius of maximum winds, and increased convection close to the center.
But before further development could occur, dry mid-level air entered the circulation and caused an overall decrease in deep convection. The sustained maximum wind speeds increased slightly, but the storm remained disorganized.
Alberto made landfall near Panama City, Florida on May 28 with sustained wind speeds of 45 mph. After landfall, Alberto dissipated rapidly to a subtropical depression.