A Category 4 hurricane is a major concern for businesses that need to keep a count of their inventory and don’t want their suppliers to face any shortages. Storms become more active during the months of August, September and October. It has been estimated that 2018 will witness around 10-16 named storms. A storm that reaches hurricane status is one where winds are at least 74 mph. A major hurricane is one that reaches category three which comes with winds of at least 111 mph.