Final answer:
Hurricanes are the name for strong storms with winds over 74 mph in the Atlantic Ocean. Very high winds in the upper atmosphere are not needed for their formation, and they typically form in the summer due to the warm ocean temperatures and other favorable conditions.
Step-by-step explanation:
The correct name for circulating storms with winds over 74 mph in the Atlantic Ocean is Hurricanes. The factor that is NOT required for the formation of hurricanes is very high winds in the upper atmosphere. Hurricanes typically form during the summer months because the temperature of the ocean is over 80 degrees Fahrenheit, among other factors, including the influence of trade winds and the energy gain as they move out to sea.
The breakup of a hurricane would NOT be caused by the hurricane originating from West Africa and moving to sea; factors that can cause a hurricane to dissipate include moving over land, high winds at high altitudes, and moving over cooler water.