The b uilding blocks for tropical storms and hurricanes: Tropical waves, often called African easterly waves, are the building blocks for much of the tropical storm and hurricane activity in the ...

It's also known as an easterly wave ... usually seen on weather maps as straight or dashed brown or red lines. While it may look as if tropical waves come from Africa, they actually originate ...

A tropical wave is about to emerge off the west coast of Africa into the tropical Atlantic ... A tropical wave, also known as an easterly wave, is an elongated area of relatively low pressure ...

In particular, easterly winds associated with weather systems known as African easterly waves that bring rains critical to crops and livestock in the Sahel, transport Saharan dust within Africa ...

African waves tend to get trapped in the easterly trade winds and can race across the Atlantic at a high forward speed. When that happens, it can become a struggle for a wave to develop and ...

Average number of tropical systems that form from deep tropical African Easterly Waves (AEW) by month. August and September typically see the highest number of waves developing into storms.

Track all active storms We also know they cross the Atlantic Ocean after moving off the African coast ... It's also known as an easterly wave, according to the National Weather Service.