Most hurricanes that hit the US and Caribbean islands come from the same exact spot in the world

Tropical Storm Dorian in the Atlantic is expected to strengthen to a Category 1 hurricane this week.

in the Atlantic is expected to strengthen to a Category 1 hurricane this week. Hurricanes that hit the US East Coast and Caribbean islands tend to follow a similar course. That's because most come from the same place in the world.

There's a point off the coast of West Africa near Cape Verde where dry, hot air from the Sahara desert meets with the cool, moist air from the south.

These powerful winds are known as the African Easterly Jet.

Visit Business Insider's homepage for more stories. EDITOR'S NOTE: This video was originally published on September 8, 2017.