Inside History on Instagram: "Once a tropical storm strengthens into a hurricane, it earns a category designation on the Saffir-Simpson Hurricane Wind Scale: 1 through 5. Knowing about each category can help predict what damage an incoming storm may inflict — and how best to prepare. The categories are defined by wind speed, with a storm of Category 3, 4, or 5 considered a major hurricane. And damage is exponential as wind speed increases, meaning a strong Category 3 storm could do up to 60 time