Asynchrony of New England hurricanes and air temperature. Atlantic hurricanes depend on warm ocean temperatures. Because the sea warms and cools more slowly than the air and it takes days to weeks for hurricanes to travel to New England, the peak of hurricane activity in the Vineyard occurs as air temperatures are falling, tourism is declining, but ocean temperatures remain high. The Fujita scale of wind velocity and damage: (1) light: less than 73 miles per hour (mph); branches broken; (2) moderate: 73-112 mph; trees heavily damaged, shingles peeled; (3) considerable: 137 mph or greater; trees uprooted, roofs torn off.